Vintage Bus Returns to London Streets A "K" type General Omnibus - one of the last to run in London in the years immediately after the first world war - made a re-appearance on London streets today, 28th May 1963, preceding the opening of the Museum of British Transport at Clapham on 29th May. The omnibus left the Museum and travelled on the No 9 route to Liverpool Street. The "K" type omnibus passing Ludgate Circus on the way to Liverpool Street.