SOAS is not a normal university. It's a cesspit of all the worst excesses of the left and every degree course offered there is strongly flavoured with "White people = evil". SOAS started out as a place where the administrators of the colonies went to receive training before being posted to the far flung reaches of the Empire. Today it is a hothouse of apologist politics where they will try to indoctrinate you in every dujour insane idea that is going - and always with one aim in mind - destruction of Western civilisation.
If this is your bag, then by all means - but if you just want to go to university in London, then there are choices which aren't a Yasmin Alibhai-Brown echo chamber. If you don't believe me, just take a read of the module descriptions and peruse the articles and research papers of the tutors. Everything is centered on "diversity" rather than "history".
Nottingham is an excellent university in all respects. Town is a bit rough in places.