A&O Shearman (formerly Allen & Overy)

Global law firm with an aviation and asset finance practice, London office at One Bishops Square

About A&O Shearman

A&O Shearman is a global law firm. Its website lists practice areas in advisory and regulatory work, capital markets, corporate and M&A, disputes and finance. The firm says it has strong relationships with the regulators that oversee its clients' operations around the world.

The financial services advisory and regulatory group acts as counsel to financial services firms. Its team advises banks, broker dealers, asset managers, investment funds, fintechs, insurers and payment platforms. Its work covers bank regulation, broker dealer licensing, insurance, digital asset regulation and consumer protection.

The regulatory enforcement team handles investigations for financial services clients, from market abuse to cyber and data security breaches. The firm also helps clients deal with regulators before problems become enforcement matters. The site says the team includes former regulators and prosecutors.

The restructuring, insolvency and capital solutions group acts for stakeholders across the capital structure. Its clients include corporates, boards, sponsors, banks, lenders and noteholders. The site says the group supports clients in industries such as energy, financial services, industrials, aviation and shipping.

The firm's wider expertise covers antitrust, artificial intelligence, cybersecurity, data privacy, environmental law, insurance, real estate, sanctions, sustainable finance and tax. Its Markets Innovation Group and Fuse teams focus on legal innovation and specialist resourcing.

The website lists industries including energy, financial institutions, infrastructure and transport, technology, life sciences and private capital. It also lists London and New York among the places where its lawyers are based, and it publishes insights such as a global restructuring outlook for 2026.