David O'Brien > Penningtons Manches Cooper LLP > London, England > Lawyer Profile

‘A go-to legal firm that cannot be faulted‘, Penningtons Manches Cooper LLP‘s has notable strength in cross-border and international disputes. The practice’s current claims roster includes several large-value matters involving countries such as India, Guinea and South America, as well as North America. Dividing her time between Cambridge and London, Clare Arthurs leads the team that comprises consultant Rustam Dubash, a former practice head; David Niven, who co-heads the professional negligence and group actions practice alongside David O’Brien; international litigation head Richard Marshall; and IP and IT disputes leader Phillip D’Costa. Also integral to the practice, Michael Brown, Kamran Rehman and Alex Fox all maintain active commercial disputes practices; and Charlotte Hill, Harriet Vidot and Laura Coleclough, along with Chris Hoyer Miller, Oliver Cooke, Colin Hayes, and Valya Georgieva are key senior associates. Insolvency and civil fraud partner John Adams joined from Browne Jacobson LLP in August 2022.

The practice at Penningtons Manches Cooper LLP is ‘very experienced, trustworthy, and very capable in managing complex group actions’, acting for clients in claims linked to insurance, financial mis-selling,  and professional negligence. For one client, the team led by Clare Arthurs is ‘probably one of the best for group litigation‘. Noted practitioners include ‘extremely effective and knowledgeable’ David Niven and David O’Brien, who is commended for ‘leaving no stone unturned‘.

Penningtons Manches Cooper LLP is a claimant focused firm which specialises in group action claims against solicitors and construction professionals. The firm is praised for its ‘unparalleled sense of team spirit and sense of collaboration and support’. The ‘no nonsense’ David Niven specialises in high value, multi-party professional negligence actions against legal professionals. David O’Brien is highly experienced in international group actions, including those brought before the High Court, while Kamran Rehman covers the banking, finance, and real estate sectors.