Ok, in all fairness, it would help if Black people stopped using the N-word. It woud lose a lot of the mystique it has accidnetaly acquired. Especially given the powerful draw of Black culture to some white youngsters.
That said, it is not a word I recall being used a great deal over here. I speak, of course, for my wn experience. Even Alf Garnett, the most epic portrayal of English racism ever, didn't use the N-word. He called Black people 'coons' and brown people 'wogs'.
As I grew up, terms such as 'jungle bunnies' turned up occasionally, but eventually 'wog' became a general term for any non-white person, alongside 'black bastard'. The N-word was viewed as one used by white Americans to refer to Black Americans and by Black Americans to describe other Black Amerians they disliked. It wasn't a British word, so it wasn't often used, although more upper-middle-class people sometimes referred to 'Negroes', as if this were more polite.
Oddly, other racist terms were less generic. It was considered bad form to refer to an Oriental person as a 'Chink' if they were, in fact, a 'Nip'. The distinction between European races was very precise. If you came from Germany or Austria, you were a Hun, a Boche or a Jerry (people from Scandinavia had no perjorative terms applied). The French were Frogs, the Spanish Dagoes and Italians were Wops or Eye-Ties. The Welsh were Taffs or Sheep-shaggers and the Scots Jocks, Irish were Micks, Paddies or Bogtrotters. But, Black or brown, you were just a Wog!