"relaxed abortion laws"? 

Actually, he voted against what eventually became the 1967 Abortion Act:

http://hansard.millbanksystems.com/commons/1966/jul/22/medical-termination-of-pregnancy-bill#S5CV0732P0_19660722_HOC_74

And later, in 1985, he introduced the unsuccessful Unborn Children (Protection) Bill, which would among other things have defined life as beginning at conception.