Year of Call: 1993 Year of Silk: 2015
Zoe O’Sullivan KC is a robust and experienced advocate who thrives on the challenges of oral advocacy and cross-examination. She is recommended by Chambers UK Bar for Commercial Dispute Resolution, Banking & Finance and Information Technology. Zoe is also recommended in Dispute Resolution (The English Bar - United Arab Emirates) by Chambers Global.
Zoe is described in Chambers UK as “very easy to work with and very hands-on”, “very technically able” and “formidably bright”. The Legal 500 says: “Zoe is - even by the standards of the commercial bar - highly intelligent and extremely diligent: she is seriously very hard-working. As a result she displays complete mastery of the documents and of the law. She is an extremely tough, but always fair and decent, opponent. A star silk for the future.”
Zoe’s commercial/Chancery practice spans a broad range including IT and outsourcing disputes, shareholder disputes/joint ventures, directors’ duties, banking and finance, civil fraud, oil and gas, and shipbuilding. She is highly experienced in jurisdiction issues and in key interim applications including freezing orders, anti-suit injunctions, and applications under section 44 of the Arbitration Act 1996.
Zoe is also ranked by the Legal 500 as a leading silk in international commercial arbitration. She is regularly appointed as presiding, sole and co-arbitrator in claims proceeding under the LCIA, DIFC-LCIA, ICC and UNICTRAL rules. She is on the List of Arbitrators of the HK IAC.
Zoe is registered in the DIFC and admitted to the Bar of the BVI.
Zoe’s experience as arbitration counsel includes the following:
Acting for the respondent in a DIAC arbitration where the claimant is claiming an introduction fee in respect of an Islamic facility.
Acting for the respondent in a USD 100m claim arising out of the parties’ agreement to split their interests in a multi-national group of companies servicing oil and gas producers. Zoe is counsel in the arbitration and has also acted for the respondent in resisting enforcement in the DIFC Court of Appeal of interim measures ordered by the tribunal: see Neal v Nadir [2024] DIFCA 001.
Acting for the claimant shipowner in a USD 200m arbitration under LMAA rules concerning whether the shipyard had delivered a contractually compliant vessel so as to trigger the final payment obligation. She also appeared in the Court of Appeal in a claim by the shipyard under the performance guarantee: see Shanghai Shipyard Co Ltd v Reignwood International Investment [2021] EWCA Civ 1147.
Acting for the respondent in an LCIA arbitration arising out of loan finance provided for a wind farm project.
Acting for the claimant in a dispute arising out of the premature termination of a long term supply agreement.
Acting for a Ukrainian businessman in an LCIA arbitration claim against a Russian state bank for the wrongful termination of a share purchase agreement relating to a distressed Ukrainian bank, including appearing on an application for interim relief under the LCIA’s Emergency Arbitrator rules.
Acting (with Rupert Reed KC) for the successful claimant in a landmark decision of the DIFC Court, refusing on public policy grounds to recognise a judgment of the Dubai Court of Cassation that an arbitration clause was invalid for lack of authority. YYY Limited v ZZZ Limited [DIFC] 2019 ARB 005.
Acting for the respondent to an LCIA arbitration claim for unfair prejudice and damages arising out of an agricultural joint venture in Ukraine which failed following the Russian invasion of Crimea in 2014.
Acting for a Chinese individual in a Hong Kong seated ad hoc arbitration claim against Goldman Sachs for loss arising out of the delayed liquidation of a portfolio of derivatives contracts.
Acting for the Kazakh claimant in an LCIA arbitration claim against a Chinese respondent arising out of a joint venture to exploit an oil exploration concession in Kazakhstan.
Appearing for the claimant in its AA s. 67/68 application to set aside a partial award on the grounds of lack of jurisdiction and procedural unfairness. Interprods Ltd v. De La Rue International Ltd [2014] EWHC 68 (Comm).
Acting for the claimant mining company in a dispute about the defective construction of a floating offshore transfer platform.
Acting for a telecoms company opposing the enforcement in England of an Austrian New York Convention arbitration award for €268 million.
Acting (with David Wolfson KC) for a major investment bank in an LCIA arbitration claim to enforce obligations under a cross currency swap agreement with a Kazakh counterparty.
Acting for the Defendant in the Court of Appeal in his application to set aside an award of the Beth Din on grounds of lack of jurisdiction. Zwiebel & Anr v. Konig & Anr [2009] EWCA Civ 892.
Acting for the Claimant to obtain an interim injunction restraining a share transfer in support of a pending LCIA arbitration.Tchigirinski v. Orton Oil Company Ltd [2009] EWHC 1739 (Comm).
Acting for the Claimant in a Hong Kong seated ICC arbitration arising out of a distribution agreement for Naxos recordings.
Acting for a major water company in an ad hoc arbitration concerning the collection of sewerage charges by another water company.
Zoe has been recommended in Banking & Finance by Chambers and Partners 2023.
Zoe appeared for the guarantor in an important recent Court of Appeal decision on the construction of guarantees: Shanghai Shipyard Co Ltd v Reignwood International Investment [2021] EWCA Civ 1147.
Zoe's experience includes acting for and against banks in a wide variety of cases involving letters of credit, guarantees, the ISDA Master Agreement and standard form loan and security documents.
Recent cases include:
Zoe acted (with Gregor Hogan) for the successful claimants in the first Dubai International Financial Centre Court case to establish definitively that the DIFC Court has jurisdiction to grant freezing and asset disclosure orders in support of foreign proceedings: Lateef v Liela [ARB 17 2020], 13 December 2021.
Zoe acted (with Adrian de Froment) for Barclays Bank in its successful US$135 million claim in the Dubai International Financial Centre Court against Dr BR Shetty, founder of the collapsed NMC Health group. The claim was brought under a guarantee given by Dr Shetty of the trading liabilities of UAE Exchange, the Dubai-based money exchange owned by Finablr plc. Barclays Bank plc v Shetty [2020] DIFC CFI 061, judgment dated 4 May 2021
Zoe acted for Deutsche Finance International LLP, a respondent to a third party disclosure application where the judge accepted her submissions that disclosure should be made subject to a confidentiality club excluding lay representatives of the parties: Bugsby Property LLC v LGIM Commercial Lending Ltd [2021] EWHC 1054 Comm)
Acting for a Ukrainian businessman in an LCIA arbitration claim against a Russian state bank for the wrongful termination of a share purchase agreement relating to a distressed Ukrainian bank.
Acting for the Indian defendants to a claim by Bank of Baroda to enforce an Indian judgment in England.
Acting for the defendant to a claim by the Bank of Dubai to enforce a court judgment.
Acting for a derivatives trader subject to freezing and proprietary injunctions
Advising the claimant as to its rights and obligations under a portfolio of Contracts for Differences governed by the 2002 ISDA Master Agreement.
Acting for the defendant Russian businessman, resisting enforcement of Russian court judgments totalling £150 million on public policy and human rights grounds. Bank of Moscow v Chernyakov [2016] EWHC 1353 (Comm)
Acting for a bank, resisting a Bankers’ Trust application for documents held by its foreign branch
Acting for corporate defendants in the BTA Bank v Ablyazov litigation brought by Kazakhstan's largest bank against its former managing director and majority shareholder.
Acting for the borrower (with David Wolfson KC) in a dispute as to whether events of default had arisen under Facility Agreements granted for the purchase of Frankfurt real estate.
Acting in a claim to enforce a deed of guarantee given in relation to the restructuring of Parmalat Brazil.
Acting (with David Wolfson KC) for a major British investment bank in an LCIA arbitration claim to enforce a cross currency swap agreement against a foreign counterparty.
Acting (with Jeffery Onions KC) for the defendant finance company in a dispute under a guarantee where the claimant alleged that guarantee was illegal under Singapore money lending legislation.
Acting (with Jeffrey Gruder KC) for Standard Chartered Bank in the House of Lords, in a letter of credit fraud case which remains a leading case on directors' liability in fraud and the recoverability of lost management time as damages. Standard Chartered Bank v. Pakistan National Shipping Corporation [2003] 1 AC 959 (liability appeal) [2001] EWCA Civ 55; Standard Chartered Bank v. Pakistan National Shipping Corporation [2001] 1 All ER (Comm) 822 (quantum appeal)
Acting (with Geraldine Andrews KC) for SGS, the international inspection company, in a letter of credit fraud claim, and in the contribution proceedings between SGS and Credit Agricole Indosuez, in which the Court of Appeal gave a leading decision on subrogation and contribution between defendants. Niru Battery v. Milestone Trading [2001] 2 All ER Comm 705; Niru Battery v. Milestone Trading [2004] EWCA Civ 487
Zoe acted (with Gregor Hogan) for the successful claimants in the first Dubai International Financial Centre Court case to establish definitively that the DIFC Court has jurisdiction to grant freezing and asset disclosure orders in support of foreign proceedings: Lateef v Liela [ARB 17 2020], 13 December 2021.
Zoe obtained a worldwide freezing and asset disclosure order in the BVI Court against a Ukrainian oligarch accused of defrauding one of Ukraine’s biggest banks (2021).
Zoe obtained a worldwide freezing and asset disclosure order in a guarantee claim against Dr BR Shetty in the DIFC Court prior to obtaining immediate (judgment) for the full sum claimed Barclays Bank plc v Shetty [2020] DIFC CFI 061, judgment dated 4 May 2021
Zoe’s experience in bringing and defending civil fraud claims encompasses Ponzi schemes, claims for deceit and conspiracy, dishonest assistance and unconscionable receipt, proprietary, and trust-based claims, freezing orders and Norwich Pharmacal relief, claims against professional defendants, rogue traders, letter of credit frauds, VAT (MTIC) fraud and premium rate telephone frauds. She acted for the sons of Bernard Madoff, successfully defending a fraud claim brought against them by the liquidator of Madoff’s fund.
Recent cases include:
Representing Dr Michael Fakih in his claim in the DIFC Court arising out of the insolvency of the NMC Health group. Dr Fakih sold his stake in the Fakih IVF group (which he founded) to NMC in 2018 but seeks to set aside the sale on the grounds of fraud by the former NMC management.
Representing the Respondent to a claim for damages and unfair prejudice relief arising out of an agricultural joint venture in Ukraine, involving questions of alleged fraud and breach of fiduciary duty, alleged breach of the shareholders’ agreement and reflective loss.
Acting for the claimant, obtaining freezing and inspection orders against a senior director found to have engaged in systematic invoice fraud.
Acting for a derivatives trader subject to freezing and proprietary injunctions.
Acting for a Russian businessman, resisting enforcement of Russian court judgments for £150 million on public policy and human rights grounds. Bank of Moscow v Chernyakov [2016] EWHC 1353 (Comm)
Acting for Anglo-American Mining in English proceedings to freeze and trace the proceeds of a fraud by a manager of its Australian subsidiary.
Appearing in the Court of Appeal for corporate defendants in the BTA Bank v Ablyazov fraud claim brought by Kazakhstan's largest bank against its former managing director and majority shareholder.
Acting for the sons of Bernard Madoff in their defence of claims for fraudulent and negligent breach of directors’ duties brought against them by the liquidator of Bernard Madoff’s former London trading operation. Madoff Securities International (In Liquidation) v Raven [2013] EWHC 3147 (Comm)
Acting (with Neil Kitchener KC) for the claimant oil exploration company, seeking damages for fraudulent misrepresentation brought when the defendant entered into a farm-out agreement weeks after the claimant agreed to sell its minority interest in an offshore oil and gas exploration block. Leni Gas & Oil v. Mediterranean Gas & Oil [2014] EWHC 893 (Comm)
Acting for claimant victim of a Ponzi scheme for over £50 million: obtained (and upheld) proprietary freezing order within 1 day of discovery of the fraud.
Acting (as part of the counsel team) for Sumitomo Corporation in claims against a metal broker arising out of the fraud of the rogue copper trader Yasuo Hamanaka.
Acting (with Geraldine Andrews KC) for SGS, the international inspection company, in a letter of credit fraud claim, and in the contribution proceedings between SGS and Credit Agricole Indosuez, in which the Court of Appeal gave a leading decision on subrogation and contribution between defendants. Niru Battery v. Milestone Trading [2001] 2 All ER Comm 705; Niru Battery v. Milestone Trading [2004] EWCA Civ 487
Acting (with Jeffrey Gruder KC) for Standard Chartered Bank in the House of Lords in a letter of credit fraud case which remains a leading case on directors' liability in fraud and the recoverability of lost management time as damages. Standard Chartered Bank v. Pakistan National Shipping Corporation [2003] 1 AC 959 (liability appeal) [2001] EWCA Civ 55; Standard Chartered Bank v. Pakistan National Shipping Corporation [2001] 1 All ER (Comm) 822 (quantum appeal)
Zoe is recommended as a silk for Commercial Dispute Resolution by Chambers and Partners (UK Bar) and for Commercial Litigation by the Legal 500 (UK Bar)
Zoe acted for Qatar Insurance Company in its successful counterclaim against reinsurers. The judge held that payment under the reinsurance would not place the reinsurers in breach of US-Iran sanctions: AIG (UK) Ltd v QIC, CFI 003/2022 (26 February 2024).
Zoe’s experience includes the following:
Acting (with Andrew Gurr) for the Mexican Government in a claim alleging COVID-related fraud: successfully resisted successive a strike out and summary judgment applications in December 2023 and April 2024.
Acting (with Gregor Hogan) for the successful claimants in the first Dubai International Financial Centre Court case to establish definitively that the DIFC Court has jurisdiction to grant freezing and asset disclosure orders in support of foreign proceedings: Lateef v Liela [ARB 17 2020], 13 December 2021.
Acting in numerous cases involving anti-suit injunctions in the Commercial Court and Dubai International Centre Court.
Acting for the reinsured where the reinsurers allege that US-Iran sanctions prevent them from making payment under the reinsurance policy.
Acting for the insured in a trade credit insurance claim arising out of the insolvency of Phoenix DMCC, a major commodity trader.
Acting for the guarantor in a leading Court of Appeal decision on the construction of guarantees: Shanghai Shipyard Co Ltd v Reignwood International Investment [2021] EWCA Civ 1147.
Acting (with Adrian de Froment) for Barclays Bank in its successful US$135 million claim in the Dubai International Financial Centre Court against Dr BR Shetty, founder of UAE Exchange, the Dubai-based money exchange. Barclays Bank plc v Shetty [2020] DIFC CFI 061, judgment dated 4 May 2021
Acting for Deutsche Finance International LLP, a respondent to a third party disclosure application where the judge accepted her submissions that disclosure should be made subject to a confidentiality club excluding lay representatives of the parties: Bugsby Property LLC v LGIM Commercial Lending Ltd [2021] EWHC 1054 Comm)
Acting for Dixons Carphone in a contractual dispute about the sunset provisions of its revenue sharing agreement with Telefonica UK, owner of the O2 brand.
Acting for a major beer manufacturer in a dispute against a market rival arising out of a long-term distribution agreement for premium lager.
Acting for a parent company guarantor, defending a Commercial Court claim brought by a Chinese shipyard seeking payment under the guarantee after the shipowner denied liability to make payment for four drillships.
Acting for a defendant to the claims brought by the Danish Tax Authority to recover withholding tax payments alleged to have been induced by fraud.
Acting for a commodities trader in a claim arising out of forged warehouse receipts.
Acting for McLaren Automotive Services in its successful defence of a damages/quantum meruit claim brought by a supplier who had contributed to the development of a new GT series road car. CRS GT Limited v McLaren [2018] EWHC 3209 (Comm).
Acting for McLaren in a separate dispute brought by a supplier claiming to be entitled to terminate its supply contract on short notice: obtained interim relief as to the terms of continuing supply.
Acting for Tower Hamlets Council in its defence at trial in a substantial software licensing dispute. Inform CPI Ltd v Tower Hamlets LBC [2018] EWHC 2730 (Comm).
Acting for a minority shareholder in a series of actions about the ownership and control of a Malaysian fibre optic network, including whether the issue of share certificates gives rise to an estoppel. Blomqvist v Zavarco Plc [2016] BCC 542.
Acting for the defendant in a tax warranty claim under a share sale agreement between two major players in the gaming industry.
Acting for the claimant in a summary judgment claim under a Joint Operating Agreement relating to a proposed “fracking” project.
Acting for a mining company in its summary judgment claim arising out of a failed joint venture to mine iron ore in China.
Acting for the sons of Bernard Madoff in their defence of the claims for fraudulent and negligent breach of directors’ duties brought against them by the liquidator of Bernard Madoff’s former London trading operation. Madoff Securities International (In Liquidation) v Raven [2013] EWHC 3147 (Comm).
Acting (with Neil Kitchener KC) for the claimant seeking damages for fraudulent misrepresentation brought when the defendant entered into a farm-out agreement weeks after the claimant agreed to sell its minority interest in an offshore oil and gas exploration block. Leni Gas & Oil v. Mediterranean Gas & Oil [2014] EWHC 893 (Comm).
Acting (with Ken MacLean KC) for the defendant to a claim for damages arising out of a Software Licensing and Development Agreement relating to a betting exchange software program developed by the claimant. Matchbet Limited v Openbet Retail Limited [2013] EWHC 3067 (Ch).
Acting (with David Wolfson KC) for the claimant at the trial of a dispute between two wealthy Israeli-Russian businessmen about an agreement to share revenues from the Angolan diamond industry. Gaydamak v Leviev [2012] EWHC 1740 (Ch).
Acting (with John Higham KC) for the claimant in a share sale dispute about Ukrainian steel interests. Obtained and upheld proprietary freezing order for US$110 million. Luxe Holding Ltd v. Midland Resources Holding Ltd [2010] EWHC 1908 (Ch).
Acting for claimant in a breach of share sale warranty claim arising out of the sale of Oddbins, the wine retailer.
Acting for the claimant (with Geoffrey Hobbs KC) in a licensing dispute relating to the Fashion TV franchise in Russia.
Advising Formula One Administration Limited (with Lord Grabiner KC and Daniel Toledano KC) in relation to the threatened breakaway of F1 teams in mid-2009.
Appearing (with Bill Wood KC) for Lloyds underwriters defending a claim under a political risk policy by the operators of a lottery in Azerbaijan. ILM International Lottery Management Limited v. Dumas [2002] Lloyds Rep IR 237.
Acting (with Jeffrey Gruder KC) in the House of Lords for Standard Chartered Bank in a letter of credit fraud case which remains a leading case on directors' liability in fraud and the recoverability of lost management time as damages. Standard Chartered Bank v. Pakistan National Shipping Corporation [2003] 1 AC 959 (liability appeal) [2001] EWCA Civ 55; Standard Chartered Bank v. Pakistan National Shipping Corporation [2001] 1 All ER (Comm) 822 (quantum appeal).
Zoe’s extensive experience of insurance and reinsurance claims includes the following.
Zoe acted for Qatar Insurance Company in its successful counterclaim against reinsurers. The judge held that payment under the reinsurance would not place the reinsurers in breach of US-Iran sanctions: AIG (UK) Ltd v QIC, CFI 003/2022 (26 February 2024).
Acting for the insured in a trade credit insurance claim arising out of the insolvency of Phoenix DMCC, a major commodities trader.
Acting for the insured oil company in a claim arising out of the seizure of a vessel by the Iranian navy.
Acting for the insured in a claim under a professional indemnity policy in respect of the defective design of military equipment, where insurers contended that the liability was in fact product liability and not covered.
Acting for Lloyds underwriters in the successful defence at trial of a claim under a political risks policy relating to the operation of a lottery in Azerbaijan. The chief issue was non-disclosure.
Acting for Lloyds underwriters in relation to a claim under a jewellers’ block insurance policy.
Advising Equitas (with Lord Grabiner KC) in relation to its exposure to run-off claims in respect of asbestosis claims in the United States.
Zoe has been recommended as a silk in IT by Chambers and Partners since 2016. She has been described as "very easy to work with and very hands-on. She is clearly fiercely intelligent, cares a lot about her cases and gets very absorbed in them." "She shows strong analytical skills in dissecting facts and applying legal principles."
Acting for Dixons Carphone (formerly Carphone Warehouse) in a contractual dispute about the sunset provisions of its revenue-sharing agreement with Telefonica UK, owner of the O2 brand.
Acting for the defendant IT contractor in a substantial dispute over the digitisation of NHS patient records. Appeared at first instance and in the Court of Appeal on the trial of preliminary issues relating to the limitation of liability. Royal Devon and Exeter NHS Foundation Trust v ATOS IT Services UK Ltd [2017] EWHC 2197 (TCC)
Acting for Tower Hamlets Council at trial in a substantial software licensing dispute. Inform CPI v Tower Hamlets LBC [2018] EWHC 2730 (Comm)
Acting for an IT contractor in a dispute with an NHS hospital about the development of a client portal.
Acting for an IT contractor in a dispute with a FTSE-100 insurance company over business process outsourcing and exit terms.
Acting for IBM in a substantial dispute with an insurance client concerning the provision of “software as a service”.
Acting for a County Council in an expert determination concerning the meaning and effect of a long-term IT outsourcing contract, including contractual responsibility for the cost of a software upgrade.
Acting for an IT contractor in a complex case relating to the implementation of an SAP ERP system for a housing association.
Advising Government agencies in relation to agreements for the Next Generation Shared Services plan Advising the Foreign and Commonwealth Office in relation to a desktop infrastructure services contract.
Acting (with Ken MacLean KC) in the defence of a multi-million pound claim for damages for the alleged repudiation of a Software Licensing and Development Agreement relating to a betting exchange software program developed by the claimant. Matchbet Limited v Openbet Retail Limited [2013] EWHC 3067 (Ch).
Acting for the customer in a dispute over the development of a bespoke software package for the sale of books on internet marketplaces.
Acting in the landmark BSkyB case (with Mark Barnes KC and Alan Gourgey KC) involving the year long trial of a claim of £900m for deceit in relation to a contract to supply new contact centres for Sky TV. The action involved numerous complex technical issues arising in the fields of IT, forensic accounting and economics. BSkyB v HP Enterprise Services Ltd [2010] EWHC 862 (TCC)
Acting for a specialist in GIS software, in a contractual dispute raising issues as the quality of the delivered system and allocation of responsibility for testing.
Advising a Finnish bank in a dispute with its US supplier of risk management software.
Zoe frequently acts in claims involving company law issues, including unfair prejudice petitions and minority shareholder and disputes between shareholders and joint venturers. Her cases have concerned issues such as the existence and scope of fiduciary duties owed by directors and co-venturers, the reflective loss principle, the application of section 40 of the Companies Act 2006 and remedies.
Recent cases involve:
Acting for a creditor challenging the administration’s decision to reject a proof of debt.
Acting for Vincent Tchenguiz in an application to remove the administrators of a company.
Acting for the Respondent to an LCIA arbitration claim for unfair prejudice relief and damages arising out of an agricultural joint venture in Ukraine which failed following the revolution in 2014.
Acting for a minority shareholder in a series of actions about the ownership and control of a Malaysian fibre optic network, including whether the issue of share certificates gives rise to an estoppel. Blomqvist v Zavarco Plc [2016] BCC 542
Acting for the sons of Bernard Madoff in their successful defence of the claims for fraudulent and negligent breach of directors’ duties brought against them by the liquidator of Bernard Madoff’s former London trading operation. Madoff Securities International (In Liquidation) v Raven [2013] EWHC 3147 (Comm)
Acting for corporate defendants in the BTA Bank v Ablyazov litigation brought by Kazakhstan's largest bank against its former managing director and majority shareholder.
Zoe appeared in the DIFC Court for the successful respondent in Al Buhaira National Insurance Co v Horizon Energy LLC CFI 098/2021 (9 November 2022), obtaining the dismissal of Al Buhaira’s application for an anti-suit injunction preventing Horizon from pursuing parallel proceedings in Sharjah. This important judgment contains valuable consideration of the role of comity when the DIFC Court is called upon to address conflicts of jurisdiction between the different courts of the UAE.
Zoe is registered as a foreign legal practitioner in the Dubai International Financial Centre Court and the Singapore International Commercial Court. She is also instructed as arbitrator in foreign seated commercial arbitrations in Dubai, Istanbul and Rwanda.
Zoe acted (with Gregor Hogan) for the successful claimants in the first Dubai International Financial Centre Court case to establish definitively that the DIFC Court has jurisdiction to grant freezing and asset disclosure orders in support of foreign proceedings: Lateef v Liela [ARB 17 2020], 13 December 2021.
Acting (with Rupert Reed KC) for the successful claimant in a landmark decision of the DIFC Court, refusing on public policy grounds to recognise a judgment of the Dubai Court of Cassation that an arbitration clause was invalid for lack of authority. YYY Limited v ZZZ Limited [DIFC] 2017 ARB 005.
Advised the appellant in the first appeal to the Singapore Court of Appeal from a judge of the Singapore International Commercial Court.
Legal 500 Middle East: The English Bar: Commercial 2023 lists Zoe in Tier 2 of the Leading UK-based Commercial Silks: "Zoe is a first rate silk who speaks with authority and clarity. Her presentation skills are excellent, and she has the ability to explain complex issues in simple terms."
Zoe appeared in Neal v Nadir [2024] DIFCA 001 in which the DIFC Court of Appeal held that it has jurisdiction to enforce an interim measure ordered by an arbitral tribunal seated outside the DIFC.
Zoe recently appeared for the appellant in Carmon v Cuenda in the Court of Appeal, asking it to overrule the decision in Sandra Holding that the DIFC Court cannot grant a freezing order in support of pending foreign proceedings. Judgment is awaited.”
Zoe acted for Qatar Insurance Company in its successful counterclaim against reinsurers. The judge held that payment under the reinsurance would not place the reinsurers in breach of US-Iran sanctions: AIG (UK) Ltd v QIC, CFI 003/2022 (26 February 2024).
Zoe appeared for the Bank in Punjab National Bank v Shetty (CFI 079/2020, 24 January 2024) obtaining immediate judgment against BR Shetty under his personal guarantee of loans to the NMC Healthcare group. This case is the first decision of the DIFC Court to hold that the recent revisions to the UAE Banking Law, specifically Article 122 bis, do not apply in the DIFC or to guarantees of corporate lending.
Zoe appeared for the respondent airline in WWTAI Airopco II DAC v Spicejet Ltd (CFO-086-2023, 7 December 2023) where the applicant’s freezing injunction was dismissed by the DIFC Court for lack of jurisdiction.
Zoe appeared in the DIFC Court for the successful respondent in Al Buhaira National Insurance Co v Horizon Energy LLC CFI 098/2021 (9 November 2022), obtaining the dismissal of Al Buhaira’s application for an anti-suit injunction preventing Horizon from pursuing parallel proceedings in Sharjah. This important judgment contains valuable consideration of the role of comity when the DIFC Court is called upon to address conflicts of jurisdiction between the different courts of the UAE.
Zoe acted (with Adrian de Froment) for Barclays Bank in its successful US$135 million claim in the Dubai International Financial Centre Court against Dr BR Shetty, founder of the collapsed NMC Health group. The claim was brought under a guarantee given by Dr Shetty of the trading liabilities of UAE Exchange, the Dubai-based money exchange owned by Finablr plc. Barclays Bank plc v Shetty [2020] DIFC CFI 061, judgment dated 4 May 2021.
Zoe acted (with Gregor Hogan) for the successful claimants in the first Dubai International Financial Centre Court case to establish definitively that the DIFC Court has jurisdiction to grant freezing and asset disclosure orders in support of foreign proceedings: Lateef v Liela [ARB 17 2020], 13 December 2021.
Zoe and Rupert Reed KC represented the successful claimant in YYY Ltd v ZZZ Ltd [2017] DIFC ARB 005, a landmark decision of the DIFC Court refusing to recognise a decision of the highest Dubai national court on public policy grounds. The DIFC Court held that the Dubai Court of Cassation had breached its obligations under the New York Convention by applying its own law to determine the validity of the clause, rather than the law chosen by the parties. This reaffirms the pro-arbitration bias of the common law courts, and will have importance for arbitration practitioners beyond the DIFC.
Commercial: Middle East: The English Bar (Legal 500 EMEA)
Commercial Litigation (The Legal 500)
Arbitration (The Legal 500)
Commercial Dispute Resolution (Chambers and Partners)
Information Technology (Chambers and Partners)
Banking & Finance (Chambers and Partners)
Dispute Resolution: Commercial (Chambers Global)
Dispute Resolution: The English Bar - United Arab Emirates (Chambers Global)
"Zoe is very user-friendly and a formidable advocate." (Chambers & Partners UK Bar, 2024)
"Zoe is extremely responsive, thorough and crystal-clear in her advice both on paper and in person." (Chambers & Partners UK Bar, 2024)
Zoe O'Sullivan KC of Serle Court is regularly sought out by high-profile banking and finance clients to deal with complex, often cross-border litigation. She also has an impressive expertise in arbitration matters that she can bring to bear in high-stakes cases. "Zoe is a very tenacious and strong advocate." (Chambers & Partners UK Bar, 2023)
"Zoe is both phenomenally bright and tenacious in court." (Chambers & Partners UK Bar, 2023)
"She's tremendously experienced and has particularly good cross-examination skills." (Chambers & Partners UK Bar, 2023)
"A very good lawyer, who analyses the facts and the law very carefully and impressively. She can pick up messy cases and turn them round well." (Chambers & Partners UK Bar, 2023)
"Zoe is a first rate silk who speaks with authority and clarity. Her presentation skills are excellent, and she has the ability to explain complex issues in simple terms." (Legal 500 Middle East: The English Bar: Commercial 2023)
"Zoe is quick on her feet, very responsive and very articulate. She is very bright and knows her stuff. She is very good on DIFC court procedures and UAE law." (Chambers Global, 2022).
"Zoe O'Sullivan KC is brilliant. She is super responsive, really intelligent and very, very practical. She is always available at the other end of the phone. She is very thorough but also very quick to get to the point, and concise in her advice." (Chambers Global, 2022).
"Very strong on the law of guarantees, she is a very good advocate, who is extremely pleasant and polite." (Chambers Global, 2022).
"Her written work is exemplary: clear, concise and elegant; her strategic recommendations are innovative and she is also proactive and robust in her opinions." "She's very sensible, gets to grips with a case and deals very well with the absence of information." (Chambers and Partners, 2022).
"Very strong on the law of guarantees, she is a very good advocate, who is extremely pleasant and polite." (Chambers and Partners, 2022).
"Extremely sharp intellectually but combined with being incredibly responsive with practical advice. Her advocacy was also very impressive – high energy, assertive and to the point." (The Legal 500, 2022)
"Decisive, commercial and approachable." "She is a highly intelligent and extremely hard-working and thorough advocate, and a very robust cross-examiner." (Chambers and Partners, 2021)
"She gives the right answer quickly and her advice is really clear." (Chambers and Partners, 2021)
"Zoe is - even by the standards of the commercial bar - highly intelligent, extremely hard working, and a very tough (but always fair and decent, and realistic) opponent. She displays complete mastery of the documents and of the law. She is a very tough cross-examiner. She gives her all for her clients." (The Legal 500, 2021)
"A real fighter, who is incredibly focused and charismatic and has real gravitas, but who is also easy to work with." "Great intellect and commerciality." (Chambers and Partners, 2020)
Articles:
"'Be calm, pleasant and measured at all times' - top tips for advocacy in arbitration" - 29 November 2022
"Should a revised arbitration act seek to impost a duty of confidence?" - 11 November 2022
"If it ain’t broke, don’t fix it: the English Arbitration Act and confidentiality" 18 October 2022
"Judgment in Shanghai Shipyard v Reignwood International Investment (Group) Company Ltd [2020] EWHC 803 (Comm)" 6th April 2020
Case Note by Zoe O’Sullivan: American International Group v Qatar Insurance Co DIFCA 008/2024
In American International Group UK Ltd and others v Qatar Insurance Co DIFCA 008/2024 (20 September 2024), the DIFC Court of Appeal has... Read More
Serle Court sponsors Essay Prize for Cambridge Law Review: Volume 10 | Submission Deadline, 15 December
We are thrilled to announce that we have partnered with Cambridge Law Review to sponsor a monetary award for... Read More
“Very technically able and very client-oriented”, “She’s got the brain the size of a planet”.
“Decisive, commercial and approachable.” “She is a highly intelligent and extremely hard-working and thorough advocate, and a very robust cross-examiner.”
“Zoe is - even by the standards of the commercial bar - highly intelligent and extremely diligent: she is seriously very hard-working. As a result she displays complete mastery of the documents and of the law. She is an extremely tough, but always fair and decent, opponent. A star silk for the future.”
Oxford University, MA English Language and Literature (Congratulatory First)
City University, Diploma in Law (Distinction, Arbitrators’ Prize)
2021: Admitted to the BVI Bar
2019: Registered as Advocate before the DIFC Courts
Member of the Society for Computers and Law Adjudication Scheme Panel
Zoe has a working knowledge of French and Spanish.
‘The ICC’s new rules: late to the party, but welcome as tools to ensure efficient and fair process’ Global Legal Post, Zoe O'Sullivan KC, and Tim Benham-Mirando 30 October 2020
'Covid-19 impact: How fast has dispute resolution transitioned to a digital model in UAE' Gulf Business, 20 July 2020
"Diversity of arbitrator appointments: are the parties doing enough?" CDR Magazine, 18th February 2020
"O’Sullivan makes a sure move to Serle Court" CDR Magazine, 9th April 2019
"Experienced commercial silk joins chambers", New Law Journal, 29th March 2019
NLJ Profile, New Law Journal, 1 April 2019
Serle Court - Zoe O'Sullivan QC, Experienced Commercial Silk Joins Chambers, New Law Journal, 29 March 2019
Zoe O'Sullivan QC Joins Serle Court, The Times Brief, 28 March 2019
Rare silk departure for One Essex Court as QC joins Chancery set, The Lawyer, 27 March 2019
Serle Court announces appointment of leading commercial silk Zoe O'Sullivan from One Essex Court, The Barrister, 27 March 2019
Case Note by Zoe O’Sullivan: American International Group v Qatar Insurance Co DIFCA 008/2024
In American International Group UK Ltd and others v Qatar Insurance Co DIFCA 008/2024 (20 September 2024), the DIFC Court of Appeal has... Read More
Serle Court sponsors Essay Prize for Cambridge Law Review: Volume 10 | Submission Deadline, 15 December
We are thrilled to announce that we have partnered with Cambridge Law Review to sponsor a monetary award for... Read More
The Commercial Bar Association (Combar): 2nd Gulf Meeting in Dubai 2024
Location: The Capital Club, Dubai Read More
White Paper Conferences Civil Fraud Law & Practice 2024: Shaping New Developments into Solution-Focused Answers for Your Clients
Location: The Caledonian Club, London Read More