Executive Director, Enforcement

Dr Michael Grenfell


Michael Grenfell took up his role as Executive Director, Enforcement, at the Competition and Markets Authority (CMA) on 15 July 2015.

Working closely with the Chief Executive, and as a member of the CMA Board, Michael’s role includes ensuring strategic leadership of the CMA’s enforcement portfolio.

Previous career highlights include:

  • Senior Director, Sector Regulation and Concurrency, Competition and Markets Authority
  • Solicitor and Partner at the international legal practice Norton Rose Fulbright LLP (previously Norton Rose), specialising in competition and regulatory law
  • Member, City of London Law Society Competition Committee
  • Co-author (with Martin Coleman) of ‘The Competition Act 1998’ (Oxford University Press)
  • PhD in political thought (London School of Economics); MA (Hons) in history and law (University of Cambridge)

Executive Director, Enforcement

The Executive Director in Enforcement at the Competition and Markets Authority (CMA) is responsible for:

  • leading the CMA’s enforcement work on Competition Act cases, criminal cartels and consumer enforcement, to provide value to markets and consumers
  • providing strong, visible and dynamic leadership of the CMA’s enforcement work


  1. A view from the CMA: Brexit and beyond
  2. UK competition enforcement – where next?
  3. What has competition ever done for us?
  4. Michael Grenfell on antitrust in the digital age
  5. Michael Grenfell on the CMA’s progress in enforcing competition law
  6. Michael Grenfell on the CMA’s approach to competition enforcement