Morven Hadden joined the Competition Commission in 2007. She was previously a senior associate in the EU, Competition & Regulatory department of City Law firm Simmons & Simmons where she specialized in EU and competition law. Morven was seconded to the DTI (now BERR) in 2003 where she worked as a competition policy adviser on the media merger provisions of the Communications Act 2003.

Morven is one of the authors of "UK Merger Control", LexisNexis.