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John Sykes



Business DisputesFinancial Services, Private WealthTechnology, Media & Telecommunications


Litigation & Dispute Resolution

John leads the Business Disputes team and specialises in commercial litigation, arbitration and mediation.

He is a recognised name in banking law, especially the recovery of assets, and he co leads our Litigation & Dispute Resolution team in the administration of Awal Bank, conducting litigation worth multi billions of USD in Europe, the Middle East and the United States.

Additionally, John acts for global technology firms in complex technology development and works for companies and shareholders in solving corporate, shareholder, partnership and joint venture disputes. He also acted for the Respondent in the leading case on share valuation Irvine v Irvine.

Much of John’s work is international and currently includes work in Africa, the Caribbean and the Middle East.

John regularly lectures in the UK and abroad, most recently with the World Bank in New York on anti-corruption legislation, on mediation in Qatar, and on minority shareholder disputes at SJ Live.

He is on the board of the worldwide legal network ALFA International, Center for International Legal Studies, and The Society for Computers and Law.

John is admitted to practise in England and Wales


  • Irvine v Irvine, a shareholders dispute which set the standard for minority discount on valuation of shares
  • Hadley Keeble and Norman v Gary Kemp, the Spandau Ballet litigation
  • Irvine v Irvine [2007] 1 BCLC 445, a shareholders dispute which set the standard for minority discount on valuation of shares
  • De Beers v Atos EWHC 3276 (TCC); limitation of loss in IT development
  • Awal Bank v Various, the world’s largest fraud case 
  • Arqiva v Everything Everywhere