Simmons & Simmons has 230 partners, half of which are based in its international offices outside the UK, and a total staff worldwide of approximately 2,000. It provides a comprehensive range of legal services with strength and depth. The ability to provide technically excellent, commercial and high quality advice is expected of leading law firms. Simmons & Simmons aims to provide an additional dimension by focusing on the way it works with its clients and by shaping its service to fit the clients' needs. It applies considerable expertise to all business sectors but focuses on those key to its clients. They include. (see Practice Areas for London above).

Mergers and Acquisitions, Privatisations, Venture Capital, International Equity, Corporate Finance, Major Projects, Project Finance Initiative and Public-Private Partnerships, Financial Services, Capital Markets Products, Repackagings, Securitisations, Corporate Treasury and Bank Lending, EU and Competition, Intellectual Property, Communications and Media Law, Commercial Law, Contracts, Development and Construction Work, Property and Planning, Environmental Law, Energy, Biotechnology, Railways, Dispute Resolution, Employment, Pensions, Taxation, Corporate Recovery, Structured Finance, Unit Trusts, Insurance, Commodities, Asset Finance and Aviation, Sports and Shipping.