Ms Mallon will take up the position in April 2024 in addition to her role as head of the firm’s corporate and commercial department, succeeding Catriona Gibson who, after an eight-year tenure as managing partner, will become chair while continuing as head of litigation.

Having joined Arthur Cox in 2007, Ms Mallon is among the most pre-eminent corporate lawyers in Northern Ireland and is a specialist in mergers and acquisitions, investments, and corporate reorganisation and restructuring.

Commenting on her appointment, Ms Mallon said: “It is a tremendous honour to be named as the next managing partner of one of the most respected law firms in this jurisdiction.

“Under Catriona’s leadership, Arthur Cox has maintained its reputation for providing pragmatic, nuanced and commercially minded advice.

“The firm is also known for its strong roster of clients that includes local businesses of all sizes alongside internationally-recognised brands and multinationals as we look after their interests in Northern Ireland.

“In the years ahead, I will seek to further cement that reputation, backed by our exceptional Partner group comprising market-leading practitioners across a wide spectrum of legal specialisms.”

Welcoming the appointment, Ms Gibson added: “Leading Arthur Cox has been the greatest privilege of my professional career and it is a pleasure to pass on the mantle to an incredibly capable and dedicated lawyer.

“There is no doubt that Lynsey has been a key driver to the success of Arthur Cox over recent years, working on some of the highest-profile transactions involving Northern Ireland entities, and with some of the best-known organisations in the region.

“I look forward to continuing to work with Lynsey in her new role and know that her period in charge will be a tremendously successful one.”