What can I do for you
Claire is a commercial litigator who provides clients with comprehensive legal support across a broad commercial practice including both High Court and County Court litigation, pre-action support and alternative dispute resolution. She is experienced in handling complex disclosure, commercial and regulatory claims, and contractual disputes (including shareholder disputes).
In addition to her general commercial work, Claire specialises in financial services and corporate white collar crime investigations, including self-reporting issues, internal investigations and regulatory enforcement proceedings. Claire also has experience in fraud related work including prevention, detection and recovery of misappropriated assets. She is an expert in the corporate criminal liability aspects under the Economic Crime and Corporate Transparency Act (failure to prevent fraud) and the Crime and Policing Act.
Supporting your ambitions
Claire operates in a variety of sectors, including Technology, Government and Public sector, Education, Charities and mid-market. Claire offers strategic advice and robust representation to protect clients' interests and achieve favourable outcomes in disputes.
In particular, Claire is a leader of the Advanced Manufacturing and Robotics sub-sector at Mills & Reeve, pulling together expertise from across the firm and organising events and output to support these types of clients.
What do others say
Clients have described Claire's advice as clear, thorough, and commercial, and have valued her committed and diligent approach to her work.
Claire has been highlighted as a Leading Associate for Legal 500 across 2025 and 2026, with the following comments:
"Claire O'Reilly is a stand-out individual - fastidious and unflappable, a real asset who is destined to go far."
"With experience in alternative dispute resolution, Claire O’Reilly excels in investigatory work."
"Claire O'Reilly is a superstar in the making - meticulous, hard-working, and commercially astute."