The split between Labour and the Social Democrats made it harder for moderates who remained with Labour to tackle the left wing of the party
Neil Kinnock, who replaced Michael Foot as Party leader in 1983, had to take action against Militant Tendency and unite the party if Lbaour were ever to regain power
Although he made some impressive speeches against them in 1985, Kinnock was substantially aided in his fight by Thatcher
By capping local rates, disbanding certain local authorities, the privatisation of state industries and limiting trade union power, she undermined the bases of far-left power within the Labour movement
Kinnock's modernising reforms consisted of:
unilateral nuclear disarmament (was rejected)
moved Labour to pro-Europe stance
in 1989, the Party dropped its support for union closed-shop practice
Kinnock stood down after the 1992Conservative election victory and John Smith followed, who was a favourite with MPs and ordinary Labour members alike
Smith had little time to build on Kinnock's, reforms before he died in 1994
Tony Blair succeeded John Smith and would complete the turnaround in Labour policy started by Kinnock