Although this was in production in January 1971 (during a technicians' strike hence it being in black-and-white) it was the last to be broadcast by its home region of London Weekend Television on Sunday night 3rd June 1973 in a post-midnight slot (12.10-12.40 am). It had though been broadcast in the HTV region on Wednesday 11th October 1972 (11.30pm - midnight).