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

125 WOOD STREET
LONDON
EC2V 7AW
England
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David O'Brien

Work Department
Commercial dispute resolution
Position
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)Penningtons Manches Cooper LLP is home to ‘great litigators, who are strategically astute, technically strong and commercial’. The sizeable commercial dispute resolution team is widely respected for its expertise in civil fraud, asset tracing and recovery actions. At a cross-border level, the firm continues to experience growth in India and North America-related matters. ‘Highly adept at devising practical commercial solutions to disputes’, Kamran Rehman succeeded Clare Arthurs as team head in April 2024, while Richard Marshall leads the international disputes group. Michael Brown acts in a range of commercial disputes, including financial services-related conflicts, enforcement actions and civil fraud claims. Also key to the department, David O’Brien co-heads the group action and professional negligence teams alongside David Niven. Charlotte Hill is an experienced commercial litigator and Rustam Dubash is an India disputes expert. The next line of active practitioners comprises Phillip D’Costa, who leads the firm’s IP and IT disputes team; ‘determined litigant’ and business and finance disputes head Alex Fox; and cross-border fraud and contentious insolvency specialist John Adams. Other names to note are Harriet Vidot, Chris Hoyer Miller, Oliver Cooke, Colin Hayes, Richard Raban-Williams, Valya Georgieva, and Lauren Cormack.
London > Dispute resolution > Group litigation: Claimant
A go-to firm for group professional negligence claims against solicitors, Penningtons Manches Cooper LLP fields extensive court experience, from the Court of Appeal to the Supreme Court. David Niven and David O’Brien head the group actions team. Michael Brown is experienced in representing shareholders and investors in group litigation. Charlotte Hill was promoted to partner in April 2023, while Kamran Rehman replaced Clare Arthurs as head of commercial dispute resolution in April 2024. Colin Hayes and Nicole Blakely are names to note, along with Tom Stables.
Lawyer Rankings
- Commercial litigation: mid-market London > Dispute resolution
- Next Generation Partners London > Dispute resolution > Commercial litigation: mid-market
- Group litigation: Claimant London > Dispute resolution
Top Tier Firm Rankings
- Dispute resolution > Commercial litigation: mid-market
- Private client > Family
- Private client > Family: mediation
Firm Rankings
- Dispute resolution > Commodities disputes
- Private client > Court of protection
- Employment > Employees/unions
- Employment > Immigration
- Employment > Immigration: human rights
- Employment > Immigration: personal
- Corporate and commercial > M&A: Smaller Deals, £10m-£100m
- Insurance > Personal injury: claimant
- Transport > Travel
- Insurance > Clinical negligence: claimant
- Private client > Contentious trusts and probate
- Public sector > Education: institutions
- Public sector > Education: schools
- Private client > Personal tax, trusts and probate
- TMT (technology, media and telecoms) > Reputation management
- Employment > Senior executives
- Transport > Shipping
- Finance > Trade finance
- Dispute resolution > Banking litigation: investment and retail
- Private client > Charities and not-for-profit
- Corporate and commercial > Equity capital markets – small-mid cap
- Dispute resolution > Group litigation: Claimant
- Insurance > Product liability: defendant
- Insurance > Professional negligence
- Real estate > Social housing: local authorities and registered providers
- TMT (technology, media and telecoms) > Sport
- Dispute resolution > Tax litigation and investigations
- Corporate and commercial > Venture capital
- Transport > Aviation
- Real estate > Commercial property: development
- Real estate > Commercial property: investment
- Real estate > Construction: contentious
- Real estate > Construction: non-contentious
- Employment > Employers
- Crime, fraud and licensing > Fraud: civil
- Insurance > Insurance and reinsurance litigation
- TMT (technology, media and telecoms) > Intellectual property: trade marks, copyright and design
- Real estate > Property litigation
- Real estate > Residential property
- Employment > Pensions (non-contentious)
- TMT (technology, media and telecoms) > Fintech: corporate and commercial