Sean McNabb is currently a Director in the Cartels team at the CMA. His background is as a fraud investigator and he has been involved in cartel enforcement for over 20 years, having previously worked at the Office of Fair Trading. He has worked on a number of successful criminal and civil cartel investigations involving a diverse range of industries ranging from airlines, estate agents, furniture products and various sectors of the construction industry, including leading the largest ever cartel investigation in the UK which resulted in fines totalling £63.6million being issued to 103 construction firms found to have engaged in bid rigging with competitors on building contracts, including many for the public sector. He is currently Project Director for an ongoing investigation into alleged anti-competitive activity in the construction sector.