Victorian Scandals - starring Nigel Havers, Patricia Hayes & Richard Wilson (1976)

Queen Victoria came to the throne in 1837 and for the next 64 years ruled Great Britain and her Empire with an unflagging sense of moral correctness. Today the era is remembered as an age of respectability, public virtue and private morality. Victorian Scandals looks beneath the surface of that society, a world that was not exempt from the old vices of weakness, vanity and gullibility.

This episode - "The Portland Millions"  - Annie Druce (Patricia Hayes) is convinced that she is the heir to the Duke of Portland and sets about convincing the authorities with the help of a young solicitor (Nigel Havers).  Broadcast 17th September 1976

See Medium: the-remarkable-case-of-the-druce-portland-affair for more on this curious story