The son of a Cardiff solicitor and cinema owner, Leo Abse was a founding partner of the firm of Leo Abse & Cohen (now part of Slater and Gordon) and Labour MP for Pontypool and then Torfaen for nearly 30 years
Though he never held office he was noted for promoting private member's bills to decriminalise male homosexual relations and liberalise the divorce laws. During his parliamentary career, Leo Abse introduced more private member's bills than any other parliamentarian in the 20th century. Later in his political career he opposed devolution for Wales, nuclear power and nuclear weapons and British military presence in Northern Ireland. After his retirement from Parliament he wrote several books about politics, based on his interest in psychoanalysis.