Not the Nine O'Clock News
(BBC comedy sketch show, 1979-82)
In one sketch two punks are fighting at a bus stop much to the annoyance of two old ladies. An unidentified red RT pulls up and the conductor calls 'room for two only'. The conductor gives the two bells and the bus roars off leaving the punks lying on the floor having been beaten up by the old ladies who've just got on the bus. (Thanks John Hammond)