Leading law firm Arthur Cox Northern Ireland has announced a series of senior promotions, reinforcing the firm’s long-term growth strategy and continued commitment to investing in legal talent in the region.
Lois Arbuthnot, Darren Fitzsimons and Hannah Jackson from the Corporate and M&A Group, alongside Ross Carrigan from the Real Estate Group, have been promoted to Senior Associate while David Rogan has been appointed Of Counsel in the firm’s Banking and Finance Group.
The appointments reflect Arthur Cox’s ongoing investment in its people, ensuring the firm continues to provide expert legal advice and strategic counsel to clients across a broad range of sectors.
Both Lois Arbuthnot and Hannah Jackson began their legal careers with Arthur Cox, having joined the firm as trainees in 2017. Their progression to Senior Associate underscores the firm’s strong track record of nurturing and developing talent from within.
Lynsey Mallon, Managing Partner at Arthur Cox Northern Ireland, said:
“These promotions acknowledge Ross, Lois, Darren, Hannah and David’s talent and ambition. They have each made a significant contribution to the continued growth of our firm, and I am pleased to see them reach this important milestone in their careers.
“At Arthur Cox, our people are one of our greatest strengths. We are committed to creating an environment in which talented lawyers can develop, progress and build long-term careers.
“I would like to congratulate David, Lois, Darren, Hannah and Ross on this well-deserved recognition and wish them continued success in their new roles.”
This latest announcement comes as Arthur Cox marks 30 years in Northern Ireland. Since establishing its Belfast office in 1996, the firm has played a leading role in advising businesses, financial institutions, public sector organisations and investors on many of the region’s most significant transactions and projects.


