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Welcoming Jerome O’Sullivan, a new Partner to Fletcher Day

Fletcher Day is excited to announce that Jerome O’Sullivan has joined the firm as a Partner in our Dispute Resolution department.


Jerome acts for a wide range of commercial and high-net-worth clients in range of commercial disputes including construction, professional negligence, insurance and property disputes. His clients succeeded at trial in the Technology and Construction Court in the case of Freeborn v De Almeida Marcal (t/a Dan Marcal Architects) [2019] EWHC 454 (TCC), which was a case of of wide-spread significance to those who commission construction professionals.

He was also successful at trial and at the Court of Appeal in the ground-breaking case of Dreamvar (UK) Limited v (1) Mishcon de Reya (2) Mary Monson Solicitors, which involved an ID fraud in a property transaction. Dreamvar clarified solicitors’ potential liabilities for breach of trust, breach of undertaking and breach of warranty of authority, to both the vendor and the purchaser.

Jerome represents his clients in the various divisions of the High Court including Chancery, Commercial, Companies, Technology & Construction Courts, and the Court of Appeal. He also advises in relation to mediation, arbitration, and adjudication.


We are delighted to welcome Jerome to the firm.