Kate Collyer is Deputy Chief Economic Adviser at the Competition and Markets Authority (CMA), where she is responsible for overseeing the work of the economics profession in the CMA’s market and merger investigations. Kate was Director of Economics in the Competition Commission where she provided economic advice on a wide range of market and merger investigations in many different sectors in the UK. Before joining the Competition Commission, Kate was Director of Economics and Deputy Director at the Cooperation and Competition Panel (CCP) (now Monitor). At the CCP Kate led a large number of merger and competition investigations in the NHS and her research on hospital choice and merger simulation has been published in the Economic Journal. Kate has also worked as an economic consultant advising on antitrust and merger investigations in a range of sectors in the UK, Europe and US.