“Recognised by The Legal 500 as a “rising star” “headed for the very top” and by Who’s Who Legal as a Global Elite Thought Leader for Asset Recovery and Commercial Litigation, Jon specialises in high-value, complex international commercial disputes with particular expertise in civil fraud, enforcement and asset recovery. Chambers & Partners describes Jon as “incredibly impressive” and “an incredible tactician”.  The Legal 500 has called Jon a “bright young gun with a shrewd mind and a calm approach” stating that there is “complete trust and faith in Jon’s advice and his expertise”.

Jon has wide-ranging experience of commercial disputes including contractual, shareholder, corporate, banking and insolvency matters. He has particular expertise in matters involving civil fraud, enforcement and asset recovery (including both commercial and sovereign debt), and he has obtained a number of ground-breaking orders in this regard.

Jon is regularly instructed on claims involving deceit, breach of trust, conspiracy and misrepresentation, including in relation to management/employee fraud and cyberfraud. He is experienced in dealing with jurisdiction issues and questions of foreign law, as well as interim relief including freezing, search and disclosure orders. He has recognised and enforced judgments and arbitral awards from a number of jurisdictions including in cross-border insolvency matters and undertaken many asset tracing exercises. His work in relation to sovereign disputes in this regard has involved both commercial and investor-state arbitration awards (including in relation to the consequences of the CJEU’s decision in Achmea).

Jon has an international practice with clients including sovereigns, financial institutions, corporate clients, high-net-worth individuals and insolvency practitioners, and has acted on a number of complex and high value Russian/CIS cases.

Jon has also been appointed by the Court as a Supervising Solicitor.


Jon graduated from the University of Cambridge in 2001 with a first class degree in History (and M.A. in 2005) before studying law at Nottingham Law School where he obtained a distinction on his Legal Practice Course.

Jon trained at global law firm Jones Day, joining the disputes department upon qualification in March 2006. In May 2014 he joined civil fraud boutique PCB Litigation LLP (subsequently renamed PCB Byrne LLP), where he became a Partner in 2017. In April 2022, Jon joined Cooke, Young and Keidan LLP.

What the legal directories say

Who’s Who Legal recognises Jon as a Global Elite Thought Leader for Asset Recovery (2023), one of only 70 lawyers worldwide, and Commercial Litigation (2023), one of only four lawyers in England (and one of only two Partners under 45) recognised as such. He is also recommended as a ‘Future Leader’ for Commercial Litigation (2021-2023).

Chambers & Partners (2024) ranks Jon for civil fraud, with clients describing him as incredibly impressive”, “really clever, a very good technical lawyer and also very practical” and “diligent in chasing down all areas and is prepared to push the envelope – he is also an incredible tactician”. He is also recommended as “a truly creative thinker with absolutely first-rate knowledge of fraud and asset recovery law. He is great to bounce ideas off and find new angles to a case.”

The Legal 500 (2024) recognises Jon as a leading individual for civil fraud (having consistently recognised him as a ‘Next Generation Partner’ (2020-2023)). He is also recognised as a ‘Next Generation Partner’ for banking litigation (2019-2024), and also recommended for premium commercial litigation, international arbitration and commodities disputes.

The Legal 500 (2024) describes Jon as “an outstanding partner with a wealth of experience”, an “excellent litigator with a close eye to detail, a strong strategic sense and very strong analytical skills”, “technically excellent and very approachable” and a “highly experienced solicitor with great judgement”.

The Legal 500 (2023) describes Jon as “a hire that every boutique would have liked to have made” and as having a “deserved reputation for his drive, legal knowledge and quiet, steely, effective drive for successful results”.

Who’s Who Legal (2023) describes Jon its guide for Asset Recovery as “a cracking lawyer – he is always looking for a new angle”.

The Legal 500 (2022) describes Jon as “headed for the very top” and that there is “complete trust and faith in Jon’s advice and his expertise”. It also recommends him for having “a great legal mind and an eye for detail”, being “proactive in offering innovative solutions to his clients”“very thoughtful and creative” and “extremely responsive, all over the detail and punchy in his advice. Always willing to get in the trenches and he does what needs to be done.”

The Legal 500 (2021) describes Jon as a “rising star” and “a bright young gun with a shrewd mind and calm approach” who is “technically excellent, tactically savvy and hard-working” and has “outstanding analytical skills and adds a sprinkling of tactical gold-dust where necessary”.

Who’s Who Legal (2021) recommends Jon for being “quick to respond” and “always commercial and pragmatic” and his “extensive knowledge of various jurisdictions”.

Jon was also shortlisted by Client Choice Awards for its Asset Recovery and Arbitration in the UK awards (2021 and 2024 respectively).

Professional groups

Jon is a founding committee member of a community for next generation asset recovery practitioners, ThoughtLeaders4’s FIREStarters, and he was on the initial editorial committee of the Tech Disputes Network.  His professional memberships include the IBA Committee for Asset Recovery, Law Society of England and Wales, Commercial Fraud Lawyers Association, and the London Solicitors Litigation Association.

Speaking engagements

Jon‘s speaking engagements have included:

  • Co-chairing the ThoughtLeaders4 FIREStarters Global Summit for asset recovery practitioners (February 2023)
  • “Sovereign disputes and enforcement post-Achmea” (January 2023)
  • “What do you want, really really want: the ultimate client’s objectives” (August 2022)
  • “How new technology has made banks vulnerable to litigation” (April 2022)
  • Co-chair of ThoughtLeaders4 FIRE UK Summit (September 2021)
  • “Acting for the Defendant: Defeating the Queen’s Gambit – How to Play Your Opening Moves” (July 2021)
  • “Acting for the Defendant: To Hear or Not to Hear, That is the Question – Challenging Jurisdiction and Service: The Defendant’s Toolkit” (May 2021)
  • “The Art of Fraud” (March 2021)
  • “Sovereign States – a Rorschach Test” (February 2021)
  • “Fraud and Asset Recovery in England – Building an Effective International Strategy” (February 2021)
  • “How to secure your fighting fund” (October 2020)
  • “Private Prosecutions and Committal Applications” (October 2020)
  • “Banks: Fraud Claims arising out of Anti-Money Laundering and other Obligations” (June 2020)
  • “Obtaining information in fraud and asset recovery litigation” (November 2018)


Jon is a member of Lexis PSL’s Case Analysis Expert Panel on Dispute Resolution and co-edits the England and Wales chapter of ‘Enforcement of Foreign Judgements’ (published by Kluwer Law International). Topics on which he has written include:

  • “Enforcing against sovereigns – the state of play” (September 2021)
  • “Hot Topics in enforcement in England and Wales (not just Brexit-related)” (June 2021)
  • “Developments in contempt proceedings – a get out of jail free card?” (November 2020)
  • “Searching times for search orders?” (September 2020)
  • “English courts: At the forefront of fighting fraud” (July 2020)
  • “COP that! Will the new Confirmation of Payee system reduced Authorised Push Payment fraud” (June 2020)
  • “Defeating Dissipation: recent legal developments” (Financier Worldwide, February 2018)


Italian (conversational)

Cases of Note

  • Representing a Ukrainian businessman challenging an application for security for costs

  • Advising clients in relation to a high profile contractual dispute named in The Lawyer’s Top 20 Cases of 2022

  • Acting for Chinese and Chilean clients in relation to an alleged $1bn+ fraud claim

  • Advising Russian, Indian and Middle Eastern banks pursuing guarantors and promoters.

  • Representing a private equity firm enforcing a €130m+ arbitral award against a European state, including in relation to the impact of the CJEU’s decision in Achmea (PL Holdings v Poland)

  • Representing investors in relation to the enforcement of a substantial ICSID award

  • Advising an ICA award creditor resist a section 67 Arbitration Act challenge.

  • Advising victims of authorised push payment and forex frauds.

  • Advising a sovereign state resisting the enforcement of an arbitration award

  • Acting for a commodities trader in a €225m fraud claim

  • Obtaining default judgment in a dispute addressing unique interpretative issues arising out of a contract with jurisdiction and governing law clauses in favour of Great Britain

  • IFT S.A.L. Offshore v Barclays Bank Plc [2020] EWHC 3125 (Comm): securing permission to use disclosure to bring a claim against an alleged fraudster’s bank on behalf of the Lebanese victim of an authorised push payment fraud

  • Acting for a defendant in a c. US$350m Russian oligarch dispute concerning the ownership of a substantial fishing enterprise

  • Acting for an insolvent Russian bank relating to a £1.34bn worldwide freezing order and search order in one of Russia’s largest ever alleged frauds (Vneshprombank v Bedzhamov)

  • Recovering the proceeds of fraud from a fraudulent employee’s family and pursuing ground-breaking claims against the fraudster’s banks

  • Qatcom LLC v Jones [2018] EWHC 492 (Comm): obtaining injunctive relief for the Qatari ‘Yellow Pages’ in relation to the alleged misappropriation of its key electronic assets. Subsequently judgment was obtained on behalf of the applicant with indemnity costs awarded

  • Securing the cross-border insolvency recognition of a Chilean insolvency practitioner of Alberto Chang Rajii, the so-called ‘Chilean Madoff’, in relation to an alleged US$100m+ Ponzi scheme

  • BM-Bank JSC v Chernyakov and Erokhova [2017] EWHC 2564: obtaining a maximum 2-year prison sentence for committal for contempt of court

  • Abela v Fakih [2017] EWHC 269 (Ch): acting for the successful applicant in what is believed to be the first reported judgment concerning the Court’s jurisdiction to grant a search order against a third party

  • The enforcement of Russian judgments totalling c. £150m against a judgment debtor

  • Goldcrest v McCole [2016] EWHC 1571 (Ch): obtaining judgment in default on the defendant’s counterclaim and the dismissal of the claimant’s claim against her in relation to the enforcement of a charge over property

  • Representing a prestigious Liechtenstein-based trust, which is heavily involved in the art world, in relation to a multijurisdictional dispute with a Dubai based art collector

  • Procter & Gamble v Svenska Cellulosa Aktiebolaget SCA [2012] EWHC 498 (Ch): representing P&G in a substantial dispute concerning unpaid invoices arising out of transitional manufacturing arrangements following the sale of a business

  • Procter & Gamble v Svenska Cellulosa Aktiebolaget SCA [2012] EWCA Civ 1413: advising on a dispute concerning payments due under an asset sale agreement in respect of early retirement pension benefits passing under TUPE

  • In the matter of ESO Capital Luxembourg Holdings II S.a.r.l (FSD No: 77 of 2011-AJJ): acting in a €50m+ cross-border dispute arising out of the refinancing of a property construction and development project in the French West Indies, including defending injunction proceedings seeking to prevent the issue of a winding-up petition