Dorrien Peters > Irwin Mitchell > Sheffield, England > Lawyer Profile

Irwin Mitchell
S3 8DT

Work Department

Business legal services - commercial litigation


Dorrien specialises in commercial litigation and dispute resolution (including domestic arbitration and international dispute resolution). He qualified as a solicitor in 2002, having spent seven years working in the aerospace engineering sector. Dorrien has extensive experience of commercial dispute resolution, including High Court litigation, adjudication, mediation, expert determination and domestic arbitration. He has advised clients or been involved in cases in many foreign jurisdictions including the USA, Hong Kong, the Middle East and much of Europe. Important cases: acting for a manufacturing client in respect of a claim against a structural engineer who designed foundations for a large piece of manufacturing equipment which was fundamentally important to the company’s growth plans. The foundations failed and the remedial works were particularly complex and took over a year to implement, causing significant consequential losses. This claim has required extensive engineering and forensic accountancy expert support; leading a team of lawyers on a significant dispute concerning a £400m property portfolio which is owned by a Guernsey-based investment fund. The dispute has various aspects including disputes regarding the strategy of the investment fund and service charges payable by the investment fund.


Trained DLA Piper UK LLP; qualified 2002; DLA Piper UK LLP (Sheffield office) 2000-2014: trainee solicitor 2000-2002; solicitor, litigation and dispute resolution 2002-2006; associate, litigation and dispute resolution 2006-2013; legal director, litigation and dispute resolution 2013-2014; partner, commercial litigation 2014-present, Irwin Mitchell LLP.


Hitchin Boys’ School; Sheffield University: 1992 (HNC in Electronic Engineering); 1994 (HNC in Business and Finance); 1998 (LLB (Hons)); 1999 Legal Practice Course.


Mountain walking and cycling.

Lawyer Rankings

Yorkshire and the Humber > Dispute resolution > Commercial litigation: Sheffield, South Yorkshire

(Leading individuals)

Dorrien PetersIrwin Mitchell

Irwin Mitchell impresses with notable expertise in the insurance, retail, professional services, insurance, IT and manufacturing sectors. The team handles cases spanning corporate governance disputes, restrictive covenant litigation, injunctive relief work, and shareholder and derivative claims, among others. Dorrien Peters, who is ‘calm and unflappable in the face of pressure‘, and Steven Beahan jointly lead the team.

London > Dispute resolution > Commercial litigation: mid-market

Irwin Mitchell‘s key commercial disputes figures are recently promoted Katie Byrne in Gatwick, who acts in high-value international and financial services (including insurance) disputes; and London-based solicitor Samantha Leung, who is ‘hardworking, diligent and extremely able‘. Providing additional partner-level support are Manchester-based Duncan Hope and Dorrien Peters in Sheffield.