Mourant has appointed veteran Guernsey advocate John Greenfield to its dispute resolution team, marking a significant addition to the firm’s litigation capabilities. Greenfield brings decades of experience in high-stakes commercial, trust, and multi-jurisdictional disputes.
Having practised in Guernsey since 1980, John has appeared before the Royal Court, the Guernsey Court of Appeal, and the Privy Council. He is a former head of the Guernsey Bar and played a key role in reforming the island’s civil procedure rules in 2008. ‘It’s a very exciting time to be joining the firm,’ he said, adding that Mourant’s disputes team has ‘an indomitable reputation in the region’.
John is also a founding member of FraudNet, a global network of top fraud lawyers, and is ranked as a ‘Senior Statesperson’ by Chambers and Partners. Legal 500 UK 2025 lists him in its Hall of Fame for offshore dispute resolution.
Abel Lyall, head of Mourant’s Guernsey dispute resolution team, said: ‘John is a highly experienced and impressive litigator… he will greatly enhance the breadth and scope of our litigation offering.’ His appointment follows other senior hires at the firm, including Brad Hillson and Tom Grogan earlier this year.
