He has extensive experience of advising clients on the handling of all types of employment claims, including the most complex discrimination and whistleblowing claims in the Employment Tribunal and disputes in the High Court. His projects and transactional work covers the employment aspects of mergers, acquisitions, business transfers, outsourcings and advice on various corporate structures (including start-up companies, LLPs and partnerships). He also regularly advises clients on workplace issues, including disciplinary and grievance procedures, managing redundancy programmes, handling long-term absence and performance issues and other employee relations issues.

James advises clients in a range of sectors, including retail and consumer, professional practices, publishing, insurance, financial services and the public sector. He is recommended in Chambers & Partners, who say clients appreciate the lengths to which he will go "in order to familiarise himself with nuances of their businesses" (2014).

He frequently speaks at conferences and seminars on employment law matters and has assisted a number of clients put together training sessions for their staff on a number of topics, including discrimination issues. James is also a member of the Employment Lawyers Association.