Editorial Team

Adrian Browne
Partner and UK & I Markets Leader, Transaction Advisory Services, EY
Adrian has over 20 years’ corporate finance and due diligence experience, advising international clients particularly in Private Equity and Life Sciences. He spent two years in our San Francisco office and has also worked at EY offices throughout the UK and Ireland (London, Dublin, Edinburgh, Glasgow and Belfast)
This experience has been enhanced by two client secondments.
He is now a member of our Transaction Advisory Service’s Management Team, based in London, leading our markets business across the UKI.
Kirsten Tompkins
Senior Manager, Restructuring, EY
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Kirsten produces market analysis, thought leadership and blogs focused on capital markets for EY’s Transaction Advisory Group. Kirsten is the data analyst and author of EY’s Quarterly Profit Warning Analysis, a writer and coordinator in EY’s Corporate Development Officer programme and the UK writer for EY’s Capital Confidence Barometer.

Michel Driessen
Partner, Transaction Advisory Services, EY

Michel is the Lead Partner of Operational Transaction Services team in EY UK&I. Michel has over 27 years’ experience of combined consulting, transaction and industry experience and has previously held executive positions in Accenture, Rabobank, Visa and Fujitsu. Michel’s key area of focus has been around operational diligence, carve-outs, post merger integration and operational restructuring for private equity and corporate clients. Michel has a MBA from University of Bradford (with distinction), an MA degree in Political Sciences from Radboud University of Nijmegen and he is also a senior visiting fellow of the Cass Business School.


John Van RossenJohn van Rossen, Partner, Transaction Advisory Services, EY

John is a partner in EY’s Transaction Advisory Group. He has twenty years of experience including assisting financial and corporate investors with buy- and sell-side due-diligence services on public, private and public to private transactions across Europe, the United States and the United Kingdom including several cross-border deals.


Mark GregoryMark Gregory
Partner, Transaction Advisory Services, EY
Mark Gregory Economics

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Mark is EY’s Chief Economist in UK&I and the sponsoring partner for the EY ITEM Club. He has over 25 years’ experience as an advisor to Governments and industry on economics, policy and regulation. His key areas of focus are the macro-economic environment for business, global trade and exports, the rise of the emerging markets, economics and capital markets, inward investment, transactions, entrepreneurship and youth unemployment.


Charles HonnywillCharles Honnywill
Partner, Divestment Advisory Services, EY
Charles is an EY Partner and leads the firm’s Divestment Advisory Services team, having 30 years’ experience of deals. Charles is focused on tailoring the sale preparation to specific buyers to minimise the delay, risks of failure and to focus on achieving value before, during and after a sale process.  He is focused on working with vendors and management teams in the 18 months prior to an M&A process beginning.