Born in Tredegar, Evans was educated at Lewis School, Pengam, Howardian High School, Cardiff and the Law Society's College of Law in Guildford and London. He trained with solicitors Leo Abse and Cohen in Cardiff from 1968 and joined the firm upon qualification in 1973 rising to Managing Partner in 1987. In 1997, he was appointed Director of Insurance in the City of London office of Eversheds, the major global law firm and remained a consultant to the practice until 2009. He has also acted as a consultant on London Insurance market issues to several major North American insurance corporations.