In Timeline 191 after Britain loses World War I, democracy falls apart and extreme nationalism takes it's place. A right wing coalition between Winston Churchill's Conservatives and Oswald Mosely's Silver Shirts takes over the government and Britain becomes more authoritarian, with the Silver Shirts exerting a great deal of influence over the Conservatives.
So, what would need to happen for a right-wing coalition like this to take shape in Britain during the early 20th Century? It doesn't have to be as a result of them losing World War I or involve Oswald Mosely, but I am curious as to what some people come up with.