A&O Shearman (formerly Allen & Overy)

A&O Shearman is a global law firm formed in May 2024 when Allen & Overy and Shearman & Sterling combined. The firm has nearly 4,000 lawyers in more than 40 countries. Its London office is at One Bishops Square. It appears in this directory for its aviation finance and asset finance work.

Aviation and asset finance

The firm's asset finance practice advises on the financing and leasing of aircraft and other transport assets. Its clients include financial institutions, lessors, airlines and manufacturers.

Other practice areas

• Capital markets, including debt and equity, structured finance and securitisation
• Corporate and M&A, private equity and joint ventures
• Disputes, including international arbitration and financial services litigation
• Advisory and regulatory, including sanctions and international trade
• Finance, including project development, leveraged finance and restructuring

Industries

Energy, financial institutions, infrastructure and transport, technology, life sciences, private capital, industrial and manufacturing, and more.

History

Allen & Overy was founded in London in 1930 by George Allen and Thomas Overy. Shearman & Sterling was founded in New York in 1873. The two firms merged on 1 May 2024 to form A&O Shearman.

Company facts

• Nearly 4,000 lawyers in more than 40 countries
• London office: One Bishops Square, London E1 6AD
• Website: aoshearman.com (allenovery.com forwards there)

Contact

Contact form and office list on aoshearman.com.
Details from aoshearman.com, October 2026.