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

Penningtons Manches Cooper LLP

Work Department

Commercial dispute resolution


Partner in the London commercial dispute resolution team acting in all areas of commercial and general dispute resolution and with a particular interest in commercial contract disputes.

He is also a key member of the professional negligence team with considerable expertise in handling professional negligence claims.

He has a growing specialism in acting for claimants in high value, multi-party actions against solicitors.

Lawyer Rankings

London > Dispute resolution > Commercial litigation: mid-market

(Next Generation Partners)

David O’BrienPenningtons Manches Cooper LLP

Penningtons Manches Cooper LLP ‘has good depth of experience in commercial litigation, and provides advice that is both practically and commercially sound, while being highly effective‘. The team’s scope of work covers general commercial litigation, international litigation and arbitration, and group action litigation. Other litigation areas include banking and finance disputes, reputation management, cybercrime, product liability, energy, HNW disputes, and IP and IT; and the practice’s international work involves diverse jurisdictions, such as India and South America. Commercial dispute resolution head Rustam Dubash also heads the India group; David Niven and David O’Brien co-head the professional negligence and group action practices; Alex Fox leads the business and finance disputes team; while Richard Marshall is international litigation head. Also highly rated are IP and IT disputes head, Phillip D’Costa  and regulatory head John DohertyMichael Brown joined as a partner from Bird & Bird LLP in 2019, and consultant Noel McMichael and senior associate Charlotte Hill are also experienced practitioners.

London > Insurance > Professional negligence

Penningtons Manches Cooper LLP ‘never fails to rise to the challenge’ of advising on complex, multi-party claims against solicitors and construction professionals. The practice specialises in large group action claims; ‘seasoned litigatorDavid Niven has a strong reputation for claims against solicitors for mis-sold properties, while David O’Brien advises claimants on disputes arising from failed investment schemes. Construction lawyer Peter Stockill advises on both sides of disputes involving engineers, construction professionals and contractors.