Your challenge, should you accept it, is with a PoD after the 1983 UK election, have Labour win the 1987 UK election. If that's too hard, it can be the 1979 election, but try 1983 first. The election date can be moved back, I'm just saying goes 1987 to make it clear which election it is. This is difficult given Labour failed to win in 1992 with much better conditions, but I'm sure it's possible if you put your mind to it. Bonus points if Kinnock beats Thatcher. What would be the effects? How would UK politics be altered? Go ahead!