Practice overview

John is ranked as a ‘leading silk’ in the, Chancery Commercial, Civil Fraud, Commercial Dispute Resolution, Offshore and Professional Negligence categories in Chambers & Partners, and in the Commercial Litigation, Civil Fraud, Professional Negligence, Company and Partnership, Offshore and International Arbitration categories in The Legal 500. John was previously shortlisted by Chambers & Partners for commercial silk of the year.

John has an extremely broad and varied commercial disputes practice. Most of his cases are heard in the High Court and International Arbitral Tribunals. John also regularly appears in offshore jurisdictions (including BVI, Grand Cayman, Turks and Caicos, Singapore, Hong Kong and many European countries).

John immerses himself in all aspects of his cases. He easily assumes the role of a leader. Whilst he is prepared to back his own judgment, he is also a collaborative team player. John is an extremely good advocate, adept at modifying his tone and approach to the tribunal and at sensing how a Judge is seeing the case. He consistently impresses with thorough preparation and focused and effective cross-examination. He is rock solid on the law, reliable on paperwork and is described by solicitors as a joy to work with. What most impresses is his unwavering commitment to his cases, and to his clients.

Commercial disputes

John is ranked as a ‘leading silk’ in the Commercial, Offshore and Chancery Commercial categories in Chambers Global, in Chancery Commercial, Offshore, Civil Fraud, Commercial Dispute Resolution in Chambers & Partners , and in Commercial Litigation, Offshore, Company and Civil Fraud in The Legal 500.

His commercial practice is very broad and embraces disputes involving companies, joint venture agreements and partnerships. Many of his cases have an international dimension and involve allegations of fraud.

In the last five years, he has spent an increasing amount of time on complex fraud claims, many of which involve company law issues. Highlights of his practice during the last few years include the groundbreaking Court of Appeal decision in Tulip Trading v Bitcoin Association which held that it was arguable that software developers who controlled cryptocurrency networks owed fiduciary duties to Bitcoin owners and his comprehensive victory in the Supreme Court in Takhar v Gracefield Developments Limited where a panel of 7 judges overturned received wisdom that a litigant wishing to set aside a judgment obtained by fraud needed to show that he could not have discovered the fraud by reasonable diligence.

Many of John’s commercial cases involve claims for breach of trust and breach of fiduciary duty.

Recent cases include:

  • Tulip Trading v Bitcoin Association [2023] 4 WLR 16. This was a groundbreaking decision by the Court of Appeal. Heading up a team from Wilberforce, John persuaded the Court that it was arguable that the software developers who controlled cryptocurrency networks owed fiduciary duties to Bitcoin owners.
  • Bank of Ireland v Logue. Acted for the defendant in defence of a £55 million claim brought by the Bank in which it claimed the defendant had lied in its statement of affairs. The claim was withdrawn on the eve of the trial.
  • Mobile Telecommunications Co v HRH Prince Hussam Bin Saud [2023] EWHC 312. Acting for the Defendant in defence of a bankruptcy petition issued in respect of an arbitration award for US$527 million. The Court determined there was no issue estoppel in relation to an interlocutory decision made in respect of an earlier petition.
  • Raiffeissen Interntation Bank v Scully Royalty (ongoing). Acting for the defendant in defence of a claim in Cayman brought under the Fraudulent Dispositions Law. The allegation is that the defendant, a company listed on the New York Stock Exchange, embarked on a group restructuring in order to defeat liabilities owed under various guarantees.
  • Gerko v Seal [2023] EWHC 63. Conspiracy claim struck out for lack of primary facts tipping the balance to make a finding of fraud a realistic outcome at trial.
  • Wang v Floreat obtained the appointment of provisional liquidators over funds in Cayman and BVI set up by the Tulip Trading v Bitcoin Association [2023] 4 WLR 16. This was a groundbreaking decision by
  • Tinkler v Esken Group (formerly Stobart Group) [2022] EWHC 1375. John is acting for the Claimant who was the former chief executive officer of the Defendant in his ongoing attempt to set aside the original judgment obtained against him on the ground of fraud. The forthcoming appeal raises an important issue as to the correct approach to be adopted to a claim to set aside a judgment on the ground that it was obtained by fraud.
  • BASF Corporation v Carpmaels [2021] EWHC 2899. BASF sought over £1 billion in damages against the defendant firm for whom John acted as a result of the firm’s failure to file a timely appeal against the revocation of a patent. In the event, BASF only recovered nominal damages.
  • Natwest Markets Plc v Bilta (UK) Limited [2021] EWCA 680. John successfully appealed the first instance judgment which held that carbon credit traders at the bank had dishonestly assisted missing trader fraud in carbon emissions trading.
  • Wang v Otaibi [2021] EWHC 2896. Application for pre-action disclosure in relation to a prospective claim for unlawful means conspiracy.
  • Takhar v Gracefield Developments Ltd [2020] AC 450.The Supreme Court decided that John was correct in his contention that a litigant who seeks to set aside a judgment obtained by fraud did not need to show that he could not have discovered the fraud by reasonable diligence. The Supreme Court’s video recording of this case can be viewed here. Subsequent to this decision, Mrs Takhar successfully set aside the original judgment against her [2020] EWHC 2791.
  • Algosaibi v Saad (2019). This was a claim for over US$4 billion brought in the Cayman Islands. It is by far the biggest fraud claim ever heard there arising out of one of the biggest frauds in any jurisdiction. The claim was dismissed after a trial lasting a year. John was brought in to try and rectify the position. The Cayman Islands Court of Appeal heard the appeal over 20 days in the summer of 2019. Judgment is awaited.
  • N v Royal Bank of Scotland Plc [2019] EWHC 1770. John successfully defended the bank from a claim brought by a payment institution arising out of the without notice termination of its relationship because it was considered that its client accounts were being used for fraud and money laundering.
  • Grupo Mexico v Garcia [2019] EWCA Civ 1673. John appeared for the Claimant and successfully argued that a limited partnership that was being used by a fraudster to pursue a claim worth many hundreds of millions in Mexico should be struck off the register. The judgment at first instance was upheld by the Court of Appeal. The defendant abandoned its appeal to the Supreme Court.
  • Sabbagh v Khoury [2019] EWCA Civ 1219. John obtained an anti-arbitration injunction preventing the defendants from pursuing a foreign arbitration in circumstances where to allow it to continue would be vexatious and oppressive because of ongoing proceedings in England.
  • Staechelin v ACLBDD Holdings Limited [2019] EWCA 817. Claim for commission arising out of the sale of Gauguin’s Nafea faa ipoipo for $210 million.
  • Ieremeiva v Lagur and Ivakhiv. Acting for wife of deceased oligarch seeking to show that her inheritance had been defeated by a forged trust deed.
  • In the Matter of the Torchlight Fund LP (2018). John was brought in as replacement counsel to defend a bitterly contested just and equitable winding up petition brought by activist investors against the General Partner of a private equity fund in the Grand Court of the Cayman The principal allegation was that the General Partner was a crook who could not be trusted with his clients funds. At that time, the advice being given was that the case was likely to lose, in which event John’s clients would have lost in excess of AUS$300 million as well as having their reputations destroyed. The case settled before judgment after a 43-day trial but the Judge was so incensed by the conduct of the Petitioners (including representatives of two New Zealand Government agencies) that he insisted on giving judgment exonerating the General Partner.
  • PCP-LLP v Barclays Bank (2018). John spent three years acting for the Claimant (a company controlled by Amanda Staveley) in this high-profile multimillion fraud claim for deceit against Barclays arising out of the rescue of Barclays at the time of the financial crash.
  • Sabbagh v Khoury [2017] EWCA Civ 1120. This is a multimillion-dollar claim in conspiracy brought by Ms Sabbagh against her brothers and the Khourys who now control the business founded by her father. The Court of Appeal held that the claimant had a real prospect of establishing a claim of conspiracy to deprive her of her entitlement to shares in the eighth defendant company. The Court of Appeal also refused a mandatory stay of the proceedings under an arbitration clause. Ackerman v Thornhill [2017] EWHC 99. John acted for the Second to Fourth Defendants who successfully applied to have the claim set aside on grounds of res judicata/abuse of process.
  • Excalibur Ventures LLC v Texas Keystone [2016] EWCA Civ 1144. Acting for one of the funders who advanced £13.5 million to support the disastrous claim brought by Excalibur against Texas Keystone and who were ordered to pay costs on an indemnity basis even though no personal criticism could be levelled at him.
  • Actial Farmaceutica Lda v De Simone [2016] EWCA 1311. The Court of Appeal held that Regulation 44/2001 art.5(3) did not apply to give the English court jurisdiction to hear claims of unlawful means conspiracy and unlawful interference with contracts against defendants domiciled in Italy or Switzerland which had prevented the appellant from distributing goods in the UK. It considered that the harmful event was the non-delivery of the goods to its packaging agents in Italy and the Netherlands.
  • Acting on claims against a solicitors firm and a trust company for substantial compensation for professional negligence and breaches of trust arising out of the wrongful diversion of trust monies to a new trust structure set up by them for the claimant’s brother in law.
  • Zarbafi v Zarbafi [2014]. Acting on a family dispute where properties and other assets have allegedly been utilised contrary to the terms of the trusts on which they were said to be held.
  • Salford Capital Partners v Kenneth Krys [2014]. Acting on a claim against the liquidators of a limited partnership in the BVI concerning their failure to comply with the terms of the partnership agreement relating to the valuation of the partnership’s assets (which are worth over US $1bn).
  • R P Explorer Master Fund v Malhotra [2014]. Acting in the defence of a US $70m claim for damages for conspiracy arising out of a scheme to build an oil refinery in India.
  • Acting for the Claimant in a $60 million claim arising out of the failure to honour the terms of a share sale agreement relating to the sale of shares in a company which was the ultimate owner of two Russian banks.
  • Matchtrack v Kirschel [2013]. Acting for the Claimant in respect of an unsuccessful joint venture agreement concerning a substantial commercial property in Central London.
  • Apex Global Management Limited v FiCall Limited and Others [2013]. Acting for the Defendants in relation to a multimillion-pound shareholders’ dispute between the shareholders of FiCall.
  • Logue v PGGL and the Candy Brothers [2013]. Acting for the Claimant in a claim for damages sustained as a result of a conspiracy whereby the Defendants sought to forfeit deposits that had been paid by the Claimant for an apartment at One Hyde Park, retain the increase in value on that apartment and share in any recovery made in proceedings brought against him in the United States.
  • Stone v National Westminster Bank [2013] EWHC 208. Acting for the Defendant bank in successfully defending a £20 million claim arising out of a Ponzi scheme operated by one of the Bank’s customers.
  • Fortress Value Recovery Fund LLC v Blue Skye Special Opportunities Fund LP [2012]. Acting for one of the Defendants accused of being involved in a complex fraud which involved the diversion of substantial assets in an investment portfolio to a new structure in breach of trust.
  • Tsang v Tsang [2011]. Acting for the former wife of a dollar billionaire, who was being sued by her ex father-in-law for fraud. After objecting to the High Court exercising jurisdiction, John successfully appeared for the wife in parallel proceedings in Singapore.
  • Jenington International v Assaubayev [2010]. Acting for the Defendants who were accused of masterminding a substantial fraud arising out of the sale of gold mines in Kazakhstan.

 

Download Commercial disputes CV

  • Quote symbolJohn is a superb advocate. He’s absolutely top notch. If you have a ‘must win’ commercial litigation he comes at the top. He is a rare talent and an absolute maestro in the courtroom.

    Chambers & Partners 2025

  • Quote symbolJohn is second to none. An intellectual powerhouse and formidable cross-examiner who is lovely to work with.

    Legal 500 2025

  • Quote symbolJohn is a really outstanding silk who has a very impressive cross- examination style. He is a first-rate commercial barrister.

    Chambers & Partners 2025

  • Quote symbolJohn is a master tactician, with a great ability to pull the various strands of a case together.

    Legal 500 2025

  • Quote symbolHis attention to detail is meticulous, which combined with an engaging and persuasive advocacy style makes him a force to be reckoned with in the courtroom.

    Legal 500 2025

Commercial disputes insights & events View all thought leadership View all events

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    Events / Webinars

    Wilberforce Civil Fraud Conference 2024

    Wednesday 6th November 2024 | 12.30pm - 5.55pm, followed by drinks and canapés
    The Westin London City

    £145 + VAT | 3.75 CPD

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    Recent Cases

    High Court hands down judgment on Jaffé v Greybull Capital LLP

    Commercial disputes, Civil fraud and asset recovery

    John Wardell KC
    Thursday 10 October 2024

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    Events / Webinars

    Civil Fraud Conference 2023

    Thursday 8th June 2023 | 12.15pm - 5.55pm followed by drinks & canapés
    The View at The Royal College of Surgeons, Lincoln's Inn Fields, WC2A 3PE

    £130 + VAT | 4.0 CPD

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    Wilberforce “Hot Topic” Webinar: Tulip Trading v Van Der Laan

    Thursday 9 February 2023 | 9am - 9.45am
    Webinar, Zoom

    0.75 CPD

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International arbitration

John is ranked as a leading silk in the International Arbitration section of The Legal 500. He has conducted arbitrations under the ICC, LCIA and UNCITRAL Rules in Geneva, London, Paris, Singapore, Vienna and Warsaw. Most of his cases are document heavy and involve analysis of complex contracts.

Recent and ongoing cases include:

  • Acting for the claimant in an ongoing $50 million dispute between a private service provider and the government of an offshore jurisdiction about sums due under a long-term contract for the provision of essential public services.
  • Acting on a billion dollar inter-state arbitration involving long-term gas supply contracts.
  • Acting on a claim for breach of a performance guarantee relating to multiple contracts for the supply of natural gas and mazut (a heavy low quality fuel oil) This involves consideration of multiple contracts between numerous parties dating back 20 years.
  • Acting for an oil company seeking to recover substantial compensation for the fraudulent supply of cargoes of oil to Romania.
  • Acting for the applicant in an international arbitration in Vienna who successfully sought substantial compensation for breach of a share purchase agreement relating to the acquisition of a controlling interest in a steel plant in Macedonia. This required an in-depth analysis of the Macedonian privatisation laws and the contracts that were generated following their enactment.
  • Acting in an international arbitration in Paris where the claimant sought multimillion-pound compensation for breach of a joint venture relating to the provision of mining services for a bauxite mine in Saudi Arabia.
  • Acting in an international arbitration in Warsaw arising out of a joint venture for the construction of the A4 motorway in Poland.
  • Acting for the former head of an investment bank who was seeking approximately £30m by way of reasonable remuneration for his services.

In addition, as part of his commercial litigation practice, John has been involved in heavy contractual disputes relating to oil interests in Kazakhstan, gold mines in Azerbaijan and an oil and gas conglomerate in Ukraine.

Download International arbitration CV

  • Quote symbolJohn is second to none. An intellectual powerhouse and formidable cross-examiner who is lovely to work with.

    Legal 500 2025

  • Quote symbolJohn is a really outstanding silk who has a very impressive cross- examination style. He is a first-rate commercial barrister.

    Chambers & Partners 2025

  • Quote symbolJohn is a superb advocate. He’s absolutely top notch. If you have a ‘must win’ commercial litigation he comes at the top. He is a rare talent and an absolute maestro in the courtroom.”

    Chambers & Partners 2025

  • Quote symbolJohn is a master tactician, with a great ability to pull the various strands of a case together.

    Legal 500 2025

  • Quote symbolHis attention to detail is meticulous, which combined with an engaging and persuasive advocacy style makes him a force to be reckoned with in the courtroom.

    Legal 500 2025

Professional liability

John is recommended in Chambers & Partners and The Legal 500 as a leading silk in the field of professional negligence. He acts for and against a wide range of professionals, including barristers, solicitors, surveyors, financial advisers, accountants, patent attorneys and actuaries.

Recent cases include:

  • BASF Corporation v Carpmaels [2021] EWHC 2899. BASF sought over £1 billion in damages against the defendant firm for whom John acted as a result of the firm’s failure to file a timely appeal against the revocation of a patent. In the event, BASF only recovered nominal damages.
  • Financial Services Compensation Scheme v Estera Corporate Trustees. Acting for a corporate trustee in the defence of a number of claims for breach of trust/breach of a duty of care relating to a failed hotel development in St Lucia (2019).
  • N v RBS [2019] EWHC 1770. John successfully defended the bank against a claim that it acted in breach of its duty of care/mandate in freezing its accounts and then terminating the banking relationship with immediate effect.
  • Keymed (Industrial & Medical Equipment) Ltd v Hillman [2019] EWHC 485. John acted for Keymed in proceedings brought against two former directors for breach of fiduciary duty and/or breach of duty of care in relation to payments they authorised for the executive pension scheme of which they were the only members.
  • Richard Ward Couture Styling v HGF Limited. John acted for the defendant in defence of a claim arising out of the alleged failure to issue applications worldwide to protect the design rights of a de-tangling hairbrush (2018).
  • Orientfield Holdings v Bird & Bird LLP [2017] EWCA 348. John acted for the claimant who succeed in its claims for professional negligence against its former solicitors, who had failed to explain the results of a Plansearch Plus report but had instead formed their own view that the report contained nothing adverse.
  • Lyons v Fox Williams [2017] EWHC 532. John acted for the claimant who was seeking to obtain compensation for a failure to advise him of his rights under a long-term disability insurance policy which was held not to be covered by the retainer.
  • PB Limited v Watson Burton. Acting for a leading silk and junior in the defence of a multimillion-pound claim arising from the joint opinion that they gave as to the construction of an asset sale agreement.
  • Dualglo v Bromhead Johnson [2014] EWHC 2149. Successfully defending a claim against r a patent attorney who was sued for failing to advise that broad patent protection could not be obtained for a new glow-in-the-dark product called Dual Glo. It was claimed that this had resulted in very substantial losses sustained by the company and its backers. Amongst other matters the case involved complex issues concerning science and intellectual property law and procedure
  • Acting successfully for a barrister who had been threatened with a multimillion-pound claim arising out of the alleged failure to warn of the risks involved in extending the validity of a claim form [2013].
  • Wilson & Go Plant Ltd v. Grant Thornton UK LLP [2013]. Acting on claims of negligence against Grant Thornton both in respect of its auditing of a UK company and its corporate finance advice on the acquisition of that company for over £16m.
  • Acting on claims against a solicitors firm and a trust company for substantial compensation for professional negligence and breaches of trust arising out of the wrongful diversion of trust monies to a new trust structure set up by them for the claimant’s brother in law.
  • Langsam v Beachcroft LLP [2011] EWHC 1451 (Ch); [2011] 3 Costs LO 380; [2012] EWCA 1230; [2013] 1 Costs LO 112 . Acting on a lengthy trial and subsequent appeal on claims by the owner of Britannia Hotels against his former solicitors with regard to the advice they gave as to the value of his earlier claim against a firm of accountants and as to the merits of a settlement.

Download Professional liability CV

  • Quote symbolJohn is a master tactician, with a great ability to pull the various strands of a case together.

    Legal 500 2025

  • Quote symbolJohn is a really outstanding silk who has a very impressive cross- examination style. He is a first-rate commercial barrister.

    Chambers & Partners 2025

  • Quote symbolJohn is second to none. An intellectual powerhouse and formidable cross-examiner who is lovely to work with.

    Legal 500 2025

  • Quote symbolHis attention to detail is meticulous, which combined with an engaging and persuasive advocacy style makes him a force to be reckoned with in the courtroom.

    Legal 500 2025

  • Quote symbolJohn is a superb advocate. He’s absolutely top notch. If you have a ‘must win’ commercial litigation he comes at the top. He is a rare talent and an absolute maestro in the courtroom.

    Chambers & Partners 2025

John's Details

BSB/VAT information

Registered name: Mr John David Meredith Wardell KC
VAT number: 245962437

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Qualifications and Appointments

  • LLB (Hons) Exon
  • M. Phil (Cantab)
  • Called to the Bar of the British Virgin Islands
  • Called (ad hoc) to the Bar of the Turks and Caicos Islands
  • Called (ad hoc) to the Bar of the Cayman Islands
  • Called (ad hoc) to the Bar of Singapore

Memberships

  • Chancery Bar Association
  • Commercial Bar Association
  • Professional Negligence Bar Association

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