Emily Chissell

Emily Chissell

Emily is a Principal in the London office. She joined Keystone from the UK Competition and Markets Authority (CMA), where she worked as a Director leading market and merger investigations. Emily has over 15 years of experience as a competition practitioner undertaking analysis, research, providing advice and overseeing the delivery of large complex investigations.

Most recently, she led the CMA’s widescale market study into mobile ecosystems (exploring competition and potential remedies in mobile operating systems, browsers, app distribution and app stores) and the preparation of the market investigation into mobile browsers and cloud gaming. She also worked closely with the CMA’s Digital Markets Unit in advising on its wider portfolio of cases and digital regulation. Her sector experience beyond digital is wide ranging, covering banking (most recently open banking), aggregates, healthcare and electric vehicle charging. She has also led high-profile merger investigations (including the JD Sports/Footasylum merger) and a super-complaint on loyalty penalties. Throughout her career she has closely engaged with government, regulators and consumer organisations.

In her free time, Emily enjoys running and swimming in her local lido.


  • B.A. from University of Leeds