As we all know, in America, the Republicans used to be left-wing and the Democrats used to be right-wing. This phenomenon is not limited to the US though. It turns out the same thing happened in Britain.
Winston Churchill led Britain in its war with Hitler, allying with the Soviet Union. He was also friends with FDR. And according to the internet, right-wingers and even centrists won't stand up to fascism, only the far left will.
Margaret Thatcher led Britain in its war with the right-wing Argentinian military government. She also helped end white minority rule in Rhodesia.
Tony Blair was a friend of George W. Bush, and he got Britain involved in Iraq.
David Cameron was a strong proponent of same sex marriage and also supported the EU.
The parties switched.
This is a bad take on an almost fractal level. I'm sure someone with more time than me right now can dissect this. If not, give me a few days.