Irwin Mitchell

Irwin Mitchell is one of the largest full-service law firms in the United Kingdom, with over 3,000 staff and expertise across 180 legal services. Established in 1912 in Sheffield, the firm has expanded to 20 offices nationwide and maintains a global reach extending to more than 200 countries. It has supported over one million clients and is recognised for combining extensive legal knowledge with a strong focus on client care, including 24/7 support.

The firm has strengthened its UK presence through investment in Wright, Johnston & Mackenzie in Scotland and the acquisition of Silk Family Law in the Northeast of England. Recognised as a leading practice in personal injury and medical negligence, Irwin Mitchell also houses one of the UK’s leading Public Law teams and the country’s foremost Court of Protection practice. Its private client services cover family law, residential property, wills, tax, trusts and estate disputes, while its business services include litigation, corporate and commercial law, employment, international property, and ESG advisory. The firm is also part of First Law International, a network of more than 80 global law firms.

Irwin Mitchell has been consistently acknowledged for excellence, appearing in The Times’ list of best law firms in England and Wales, described by The Lawyer as “a litigation powerhouse,” and ranked as the number one Superbrand in the legal sector. It is the only law firm included in the Very Big category of the Sunday Times Best Places to Work 2025 and has received a Gold Award in the Defence Employer Recognition Scheme. Beyond legal practice, the firm has donated over £3 million to charitable causes since 1997, with staff completing more than 6,000 hours of volunteering in 2023.

The firm is also the Official Legal Partner to England Rugby, British Rowing, and UK Athletics.

Team Members

• Group Chief Executive: Craig Marshall
• Chief Client Officer: Louise Lumley
• Chief Finance Officer: Richard Allen

Staffing

• 256 partners
• 1,843 other fee-earners

UK Offices
Aske, Birmingham, Brighton, Bristol, Cardiff, Cambridge, Chichester, Edinburgh, Glasgow, Leeds, London, Liverpool, Gatwick, Manchester, Middlesbrough, Newbury, Newcastle, Reading, Sheffield, and Southampton