Invest Bank PSC v El-Husseini and others: as junior counsel in the Commercial Court, succeeded, on a preliminary issues trial which engaged expert evidence of UAE law, in establishing that final Abu Dhabi court judgments were enforceable in England at common law notwithstanding that local Abu Dhabi courts had recently refused to enforce them ([2024] 1 WLR 2132).  Separately, succeeded in resisting applications for security for costs ([2022] EWHC 3008 (Comm)).

ME v TalkTalk (2022): as sole counsel in Commercial Court proceedings, acting for claimant in dispute over termination of long-running services contract and substantial claim in debt & damages. 

Credico Marketing v Lambert and others (2021): as junior counsel in High Court (Queen’s Bench) proceedings, acting for a ‘face-to-face’ marketing company in its claims against rival companies and their directors for the torts of procuring breach of contract, misrepresentation, and causing loss by unlawful means.

[Importer & Reseller] v [Luxury New York Fashion Accessories Brand] (2021): as sole counsel in mediation, acting for defendant in a dispute following termination of a long-term agency relationship.  Engaged issues of novation / assignment, business valuation and availability of compensation under the Commercial Agents Regulations.

Hussein family v Ahmed family [2021] EWHC 2213 (Ch): as sole counsel in the High Court (Chancery), succeeded for defendants in applications for strike-out, reverse summary judgment and stay of various claims for misrepresentation and unjust enrichment in connection with the sale of restaurant businesses in London.

[Professional Property Lessors] v [International Property Services Provider] (2020) : as sole counsel in High Court (Chancery) proceedings, acted for defendant in claim arising from termination of a services contract.  Engaged issues of contractual interpretation, effective notice of termination, renunciation / repudiation and illegality of performance.  Also involved procedural issues concerning effective service out of the jurisdiction, alternative service and default judgment.

Allergy Therapeutics (UK) Ltd v Inflamax Research Inc (2018): as junior counsel in the Commercial Court, acted for a Canadian medical trial services provider defending a claim for breach of contract and misrepresentation concerning its conduct of a trial of a new allergy treatment drug and counterclaiming for unpaid fees. This case involved complex factual and scientific evidence, relating to drug trial processes and statistical analyses of medical data.

PrivatBank v Kolomoisky, Bogolyubov, Teamtrend Ltd and others: as junior counsel, representing corporate defendants in a US$3billion+ claim for alleged misappropriation of monies from Ukraine’s largest bank prior to its nationalisation. Claims heard over a 13-week trial in 2023; judgment awaited.  One of The Lawyer’s “Top 20 cases of 2022”.

Invest Bank PSC v El-Husseini and others (2021-24): as junior counsel in the Commercial Court, Court of Appeal and Supreme Court, representing a claimant UAE bank seeking to enforce Abu Dhabi court judgments in England and bringing claims under Section 423 of the Insolvency Act 1986 to challenge transfers of properties and other assets to the judgment debtor’s family members.

Condair v Price [2021] EWHC 2461 (QB): as sole counsel in the High Court (Queen’s Bench), secured ex parte freezing injunction and extensive disclosure orders in support of 7-figure claim for embezzlement by a company’s financial controller (engaging issues of proprietary relief, unjust enrichment, constructive trust, deceit, breach of fiduciary duty and breach of contract). 

Hussein family v Ahmed family [2021] EWHC 2213 (Ch): as sole counsel in High Court (Chancery), succeeded for the defendants in applications for strike-out, summary judgment and stay of various claims of fraudulent misrepresentation and unjust enrichment in connection with the sale of restaurant businesses in London. 

Gray v Hurley [2019] EWCA Civ 2222: as junior counsel in the Court of Appeal, representing a claimant in a jurisdiction challenge and anti-suit injunction application in relation to claims of resulting trusts, undue influence and unjust enrichment for recovery of high value real estate, shares and hypercars located abroad (including the Ferrari F1 that Michael Schumacher drove to the 2003 World Championship title).

F v Persons Unknown (2019): as sole counsel in the High Court, secured urgent ex parte freezing injunction for victim of a sophisticated fraud, where the true identity of the fraudster was unknown and had transferred misappropriated funds into Bitcoin.

JSC BTA Bank v Ablyazov and Khrapunov [2020] AC 727: as junior counsel in the Supreme Court, represented the Second Defendant, challenging jurisdiction for a claim of over US$500m+ for unlawful means conspiracy based on alleged breaches of freezing orders.

Invest Bank PSC v El-Husseini and others: as junior counsel in the Commercial Court, succeeded, on a preliminary issues trial which engaged expert evidence of UAE law, in establishing that final Abu Dhabi court judgments were enforceable in England at common law notwithstanding that local Abu Dhabi courts had recently refused to enforce them ([2024] 1 WLR 2132).  Separately, succeeded in resisting applications for security for costs which had been pursued on the basis of difficulties in enforcing English costs orders in the UAE ([2022] EWHC 3008 (Comm)).

PrivatBank v Kolomoisky, Bogolyubov, Teamtrend Ltd and others [2020] Ch 783: as junior counsel in the Court of Appeal, representing corporate defendants incorporated in the BVI in challenging the English Court’s jurisdiction for a US$3billion+ claim for alleged misappropriation of monies from Ukraine’s largest bank prior to its nationalisation.

JSC BTA Bank v Ablyazov and Khrapunov [2020] AC 727: as junior counsel in the UK Supreme Court, represented the Second Defendant resident in Switzerland, in dispute concerning jurisdiction for unlawful means conspiracy.

Invest Bank v El-Husseini and others [2024] KB 49 – junior counsel in the Supreme Court – representing the claimant UAE bank seeking to enforce Abu Dhabi court judgments and for relief under s.423, Insolvency Act 1986 to recover real estate, shares and cash transferred away by the judgment debtor and his companies.

[Private Individual] v Paddy Power (2024): acting unled for a customer in a contractual dispute (engaging aspects of the Consumer Rights Act 2015) against one of the UK’s biggest gambling operator relating to pay out of 6-figure winnings on football accumulator ‘acca’ bets.

Condair v [various gambling operators] (2022-24): as sole counsel, representing company whose ex-employee stole money from it and gambled 6-figure sums at various operators. Company seeks recovery of the money from the operators, alleging breaches of gambling licences (anti-money laundering and social responsibility code provisions) in permitting the ex-employee to gamble with them.

[Individual] v [Online gambling operator] (2021-24): as sole counsel, representing claimant who alleges a gambling addiction and seeks recovery of 6-figure sums gambled online over a period of a few weeks.

[Individual] v [Offshore gambling website] (2020): as sole counsel, advising individual gambler in dispute with offshore company in respect of disputed ‘win’ on online casino game.

[SME company] v [various bookmakers] (2017): as sole counsel, advising company whose ex-employee gambled 6-figure sums of the company’s misappropriated cash at high street bookmakers.  Case concerned breach of gambling licences in allowing the ex-employee to gamble notwithstanding problem gambling and source of money concerns.

[High Net Worth Middle Eastern businessman] v [London casinos] (2017): as junior counsel, led by Clive Freedman QC, advising ‘high roller’ in respect of potential claim for recovery of 7-figure sums gambled, on the basis of gambling addiction.

Ritz Hotel Casino v Al Geabury [2015] EWHC 2294 (QB) (2015; led by Clive Freedman QC). Successfully represented the casino at a six day High Court trial in a claim for unpaid roulette losses against a ‘high roller’ which raised detailed evidential issues about alleged gambling addiction and legal issues concerning the regulation of casinos and their obligations towards their patrons. In finding for the Ritz, Mrs Justice Simler relied upon documentary evidence which had been “painstakingly analysed by Mr Delehanty” (see judgment at para. 16). The defendant’s compliance with his disclosure obligations was scrutinised across a number of hotly contested pre-trial High Court hearings at which Marc, as sole counsel, secured orders for specific disclosure. The case was extensively reported in: The Mirror, The Guardian, The Express, The Mail and The Evening Standard.