Kirsten is a Founding Partner, based in the London office. She has 25 years’ experience and has held senior government roles as Director of Economics at the UK Office of Fair Trading and Competition Commission (now the CMA). She has extensive experience leading major multi-jurisdictional mergers, as well as working on antitrust investigations and litigation. She regularly provides written and oral evidence to European competition authorities and has testified as an expert in court. Kirsten is listed among the most highly regarded “Global Elite Thought Leaders” in Competition Economics by Lexology Index where she is ‘lauded by sources for being a “smart and creative economist who has excellent client management skills”’. In 2024, Global Competition Review awarded her “Economist of the Year”. Kirsten’s recent cases include the Epic Games vs Google litigation (Australia) in which she testified as the economic expert for Epic. Recent mergers in which she worked for the merger parties include SES/Intelsat, IBM/Hashicorp, Altrad/Stork, JBT/Marel, Saint/Gobain/Fosroc, Pfizer/Seagen, Broadcom/VMware, Nielsen/GfK, Culligan/Waterlogic, Saint Gobain/GCP, Parker Hannifin/Meggitt, Huws Gray/Grafton, Aon/WTW, Compass Group/Fazer, and ATG/Live Auctioneers. She has worked on various UK and EC antitrust investigations including the CMA investigation into the supply of electric vehicle charge points.