Martin practises as an advocate, arbitrator, mediator and adjudicator in construction and engineering disputes, and has been involved in many high-profile cases in this sector. In recent years he has appeared principally in the High Court, the Court of Appeal, the Supreme Court and before various international arbitral tribunals. He has had numerous appointments as arbitrator or adjudicator. He sits as a Deputy High Court Judge of the Technology and Construction Court. In 2018 Martin was elected a full (Arbitrator) Member of The Society of Construction Arbitrators.