Nigerians are EVERYWHERE in big numbers (even in the counties like Kent and Essex) its like they came from a worser failed state than Somalia.Somalis don't really live amongst Nigerians like that we mainly reside in north west, west and north London those places mainly have from the Madows caribbeans and some congolese and ghanaians but as you said they just second version of caribbeans. Nigerians tend to have a much stronger culture in my opinion.