The British had standard paint schemes. Each plane was painted to a set template. Hence, unlike the Germans (who were more famous for their sense of order) they did not vary. What did vary was plane and squadron codes, theater markings such as the color of the nose cone and fusalage bands, and the invasion stripes at different time periods after the invasion.
One caveat though -
It seems the further you got away from HQ Fighter Command the more chance there was for a few 'individual' touches.
Hence the Danish squadrons colourful bands (see my XVI in-game flown by Rolf Arne Berg), Malta Spits (not just the famous 'blue' ones), etc etc.
So the best chance of finding an unusual scheme is to look overseas.