Surrey Police say "the large fire" at Chessington will cause road closures for a "considerable amount of time".
Officers are asking drivers to avoid the A243 as well as the Chessington area.
More top news
The rapper answered questions in a live Q and A on YouTube.
The candidates from the Tory, Labour, Green and Liberal Democrat parties have backed calls to have Oxford Street vehicle free.
Eyewitnesses told ITV News nine suspected illegal immigrants were discovered by police in Hampton.