Imagine a timeline in which Hitler is dead very young, Weimar Republic with some luck survive,Mussolini stay quiet satisfied with his little Empire, Stalin stay in his immense sub continent killing periodically a lot of comrades and Japan is not so crazy to challenge the whole world.
Imagine a world without WW-II or others big wars.
In a timeline like this,what about UK?
Labour can go at government and make social laws like those of 1945,or without the immense debt caused by the war is more moderate?
What about society and class system,culture and the Empire?
Decolonizzation is the same that in our timeline?
And what about London intact without bombing?
And...without war we have a baby boom in 40s in this timeline?