This premiered theatrically in the UK in March 1981 and was the main Christmas Day movie on the BBC that December. At a time when the theatrical window between cinema debut and TV broadcast was 3-5 years, this was highly irregular.
The "bank" exterior is Unilever House, 100 Victoria Embankment, London.
Actress Julie Christie turned down the role of Dinah Booker which in the end was cast with Susannah York.
A town hall was used as the interior for the bank.