Peter O'Brien

Tony Horspool is a top attorney recognized by Best Lawyers in the practice area(s) of Insolvency and Restructuring Law. Tony, who practices law in London, United Kingdom, has been recognized since 2014. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which Tony is held by other top lawyers in the same geographic and legal practice area.

Graham Tyler leads the firm’s Asset Finance team globally. A recognised authority on aircraft finance and leasing, Graham regularly represents financial institutions, leasing companies, equity investors, airlines and arrangers in the procurement, financing and leasing of new and used aircraft and engines and aircraft portfolio acquisitions, financings and sales. Adept at crafting complex cross-border leasing and innovative financing structures, Graham negotiates commercial debt deals in...

Andrew Henderson is a top attorney recognized by Best Lawyers in the practice area(s) of Financial Services. Andrew, who practices law in London, United Kingdom, has been recognized since 2023. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which Andrew is held by other top lawyers in the same geographic and legal practice area.

Fiona Adams is the Managing Shareholder of the London office and the Co-Chair of the Global Corporate Practice. She primarily represents corporate clients, focusing her practice on mergers and acquisitions, and other transactional matters. Her work spans a range of industries, including pharmaceuticals, financial institutions, media and retail. Fiona has broad experience working on large, complex cross-border transactions. Fiona continues to be highly recommended by both of the leading indepe...

Clive Wells is a top attorney recognized by Best Lawyers in the practice area(s) of Banking and Finance Law. Clive, who practices law in London, United Kingdom, has been recognized since 2025. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which Clive is held by other top lawyers in the same geographic and legal practice area.

Sunay Radia focuses his practice on financial restructuring transactions, including high yield bond and LBO workouts, refinancings, consensual and nonconsensual restructurings, enforcements and distressed asset sales. He has advised on a number of complex cross border matters for creditors (including direct lenders and distressed debt funds) and sponsors. Sunay also has a wealth of experience in origination banking and finance matters, including acquisition finance and real estate finance tra...

Mark Fennessy is the co-head of the London Finance, Restructuring and Special Situations Group. He focuses his practice on contentious and non-contentious restructuring and insolvency matters. He has particular experience in multifaceted group collapses and global insolvency issues. He has been involved in a number of high-profile assignments for banks, funds and various strategic parties. Mark leads a team with unrivalled expertise in special situations, including in relation to assets facin...

Robert Parson is a top attorney recognized by Best Lawyers in the practice area(s) of Commodities. Robert, who practices law in London, United Kingdom, has been recognized since 2020. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which Robert is held by other top lawyers in the same geographic and legal practice area.

Mr. Macaulay has been recommended as a leading individual for over a decade in both Chambers UK and The Legal 500 UK. He has been described in these publications as an “unflappable” lawyer who “has extremely good judgement and is a ruthless tactician;” and is “rock solid;” “tenacious;” “a financial disputes expert;” and a “seasoned litigator.” He was included in Who’s Who Legal: Arbitration 2021’s annual Globa...

Annabel Thomas is a top attorney recognized by Best Lawyers in the practice area(s) of Fraud. Annabel, who practices law in London, United Kingdom, has been recognized since 2025. This recognition is based on an exhaustive peer-review survey, reflecting the high esteem in which Annabel is held by other top lawyers in the same geographic and legal practice area.