Mayer Brown is a leading global law firm with a strong and well-established presence in the United Kingdom. Operating from its London office—one of the firm’s largest international branches—Mayer Brown serves a diverse client base comprising multinational corporations, financial institutions, investment funds, government entities, and high-net-worth individuals.

The firm is recognised for its transactional and contentious expertise, particularly in finance, insurance, real estate, construction, and international arbitration. Mayer Brown UK offers both English and US law capabilities under one roof, making it a preferred choice for clients with transatlantic legal needs.
Services Offered
Mayer Brown UK provides a full range of legal services across key industry sectors. The firm is particularly strong in cross-border matters, and its practice areas include:
- Banking & Finance
Advising borrowers, lenders, and sponsors on domestic and international finance matters, including acquisition finance, real estate finance, trade finance, and structured finance. - Corporate & M&A
Representing clients in public and private mergers and acquisitions, joint ventures, reorganisations, corporate governance, and private equity transactions. - Dispute Resolution & International Arbitration
Handling complex commercial litigation, international arbitration, regulatory investigations, and enforcement proceedings. Mayer Brown is especially active in energy, construction, and insurance disputes. - Insurance & Reinsurance
Advising insurers, reinsurers, and brokers on coverage, disputes, policy wording, regulatory matters, and transactional issues, with a long-standing reputation in this field. - Construction & Engineering
Providing end-to-end legal advice on major infrastructure, energy, and development projects, both in the UK and abroad. - Employment & Benefits
Advising on employment contracts, terminations, TUPE, employee relations, pensions, and executive compensation. - Real Estate
Assisting with the acquisition, development, leasing, and financing of commercial and residential property, including complex investment structuring. - Tax
Advising on corporate tax structuring, cross-border tax issues, tax disputes, and fund taxation. - Financial Services Regulation
Helping financial institutions navigate UK and EU regulatory frameworks, including MiFID II, AML, ESG, and fintech compliance. - Projects & Infrastructure
Advising public and private sector clients on the legal and financing aspects of major projects in sectors including transport, energy, and social infrastructure.
Mayer Brown UK also provides specialist services in areas such as intellectual property, environmental law, and cybersecurity.
Company History
Mayer Brown traces its origins to 1881, founded in Chicago as a US law firm. Its international expansion gained momentum in the 2000s with a series of strategic mergers and office openings. The London office, Mayer Brown International LLP, was originally part of Rowe & Maw, a well-regarded UK law firm, which merged with Mayer Brown in 2002.
This merger significantly boosted Mayer Brown’s UK presence and created a platform for transatlantic and pan-European legal services. Today, the London office remains a key component of Mayer Brown’s global network, which spans the Americas, Europe, Asia, and the Middle East.
Awards and Recognition
Mayer Brown UK has received a number of awards and high rankings that reflect the firm’s reputation for excellence and client service:
- Top-tier rankings in Chambers UK and The Legal 500 UK for areas including Insurance, Construction, and International Arbitration.
- Recognised in the Legal Business Awards and British Legal Awards for its work on landmark finance, real estate, and dispute resolution matters.
- Winner of Construction Law Firm of the Year in select UK regional and industry-specific legal awards.
- Consistently named in the FT Innovative Lawyers Europe report for its adoption of legal technology and client-centred innovations.
- Recognised for its commitment to pro bono, diversity and inclusion, and environmental sustainability, with industry accolades highlighting these efforts.
These honours reinforce the firm’s reputation as a trusted adviser in both transactional and contentious work, especially for clients navigating multi-jurisdictional legal challenges.
Client and Industry Sentiment
Mayer Brown UK is widely respected by clients and peers for its professionalism, responsiveness, and technical capability. Client and market feedback commonly highlights:
- Strong cross-border capabilities, particularly in finance, corporate transactions, and disputes, with clients praising the seamless integration between UK and US legal teams.
- Reliable and strategic dispute resolution advice, especially in insurance and construction-related matters.
- Pragmatic and commercial advice, with legal teams noted for understanding business priorities and offering workable solutions.
- Approachable and collaborative culture, both in client service and internal team dynamics, with clients frequently noting the firm’s partner accessibility and willingness to adapt.
While the firm is often chosen for specialist work rather than generalist services, it is seen as a go-to firm for technically challenging and high-value mandates.
Address:
201 Bishopsgate, London EC2M 3AF, United Kingdom, Telephone
Tel: +44 20 3130 3000
www.mayerbrown.com