The UK screenings of this serial on BBC Television were plagued by technical problems. The BBC cut the original 4 x 75-minute editions down into 12 x 25-minute ones, but the print of episode 12 somehow created seemingly insurmountable vision breakdowns, causing picture interruption on the early attempts to broadcast it. For further repeats of the series (apart from 1979), 11 episodes was shown. In 1979 (for reasons unknown) only 10 episodes was shown.
Long after UK repeats ended the series reached an entirely new audience courtesy of BBC1 Saturday morning kids' show On the Waterfront (1988), which revoiced the episodes to a comedy script written by future OBE-winning scriptwriter Russell T. Davies.