Martin Tomkinson is a veteran investigative financial journalist and corporate researcher. He was a financial researcher for The Mail on Sunday's 'Rich List' from 2000-2004 and has worked on The Sunday Times' 'Rich List' since 2005.

Martin has written for all of the UK’s major newspapers. He started work with Private Eye in 1972 and has worked as a freelance since 1981. He is the author of two books, Nothing to Declare: the Political Corruptions of John Poulson (with Michael Gillard) and The Pornbrokers: The Rise of the Soho Sex Barons.