Kim Dietzel is a partner advising on all aspects of EU and UK competition law, including merger control, antitrust investigations, criminal cartel cases and competition litigation. Kim has expertise across a wide range of industries such as aviation (including on regulatory issues), transport, financial services, consumer goods and industrial sectors. She frequently represents clients before the European Commission, the UK Competition and Markets Authority, and the UK sectoral regulators.

Kim has a particular focus on competition litigation, both in respect of global case coordination and also specifically before the English courts. She also represents clients before the EU courts in Luxembourg. Kim is a qualified solicitor-advocate and appears as an advocate in the Competition Appeal Tribunal. She has been acknowledged as a leading competition litigator by Global Competition Review, Chambers and Partners and The Legal 500.  She was also recently recognised by The Lawyer magazine as a “Hot 100” lawyer in the UK in respect of cartel, investigations and competition litigation work.

Kim regularly speaks at international conferences and has published extensively on competition issues, with a focus on follow-on litigation and on leniency, where she is co-author of the UK leniency chapter of the European Lawyer Reference series guide. She is a committee member of the UK Competition Law Association.

Kim read law at Gonville and Caius College at Cambridge University, and obtained an LLM at the Goethe University, Frankfurt. She is based in Herbert Smith Freehills' London office, having also worked in the firm's Brussels office. Kim has also been seconded to the competition law team of The Coca-Cola Company. Kim is a native German speaker and has good working knowledge of French.

WWL says: Kim Dietzel is “a very strong litigator” known for her “excellent work handling some of the trickiest damages cases out there.”