A&O Insights

Play a part in legal work of global significance.

Working here

From the culture and values of the business, our areas of expertise, key achievements within the firm and what we look for, view our latest collection of videos to learn more about how we operate.

Setting precedents

Working as one team

The anatomy of a deal

Forward thinking

Thinking ahead, a new reality


Become part of A&O and you’ll work with national governments and with some of the world’s largest organisations on deals that shape the modern business environment. Read about some of our most recent key deals to find out more about the kind of cases you could find yourself working on.

Key deals


A multi-jurisdictional acquisition

We acted for Bayer to support its USD57bn financing acquisition of U.S agrochemical giant Monsanto. The deal was executed across our New York, Frankfurt and London offices.


Creating the Middle East’s Largest Lender

We acted for NBAD on its merger with First Bank Gulf PJSC, which will create an institution worth approximately USD175bn on completion.

Disputes and Investigations

The Black Sea pipeline

We worked with South Stream Transport, part of Gazprom, in an ICC arbitration with Saipem relating to a gas pipeline from Russia under the Black Sea into Europe. This was one of the largest construction arbitrations of recent years.


Kuwait’s first bond issuance

We assisted Kuwait on its first international bond issuance to a value of USD8bn – one of the largest ever by a sovereign state.


Vietnam’s largest IPO

We advised VietJet, Vietnam’s leading low-cost airline, on its USD170m IPO on the Ho Chi Minh Stock Exchange.

Disputes and Investigations

Enforcing medical patents

We acted for Pfizer in its patent for the blockbuster Lycria against Actavis and a number of generic companies in Europe.


Leasing fifty airliners

We supported four syndicates of nine lenders on the lease financing of 50 Airbus A330s and A320s to Saudi Arabian Airlines.


Electricity generation in Africa

We supported the Africa Finance Corporation and the Pan African Infrastructure Development Fund on the establishment of a joint venture to generate 1,575 megawatts of electricity.

Disputes and Investigations

Advising Google

We’ve worked with Google on a number of projects including a survey of atypical workers. Work has involved offices in New York, London and Hong Kong, the Belfast Legal Services Centre and Peerpoint consultants.