When a close-up is shown of the grave of Audrey's late husband, his first name is seen to be spelled "Marton", not "Martin". This unusual spelling began as a typo when Peter Spence, the creator, was typing a copy of the original radio script on which the TV version was based. John Lloyd, the producer of the radio play, decided to keep this spelling because "the aristocracy are always mucking about with the spelling of things".
Last episode of the series.
The statue and memorial to Audrey's late husband is actually a memorial to Alexander Nelson Hood, 4th Duke of Bronte. The inscription on the base reads "Here rests Alexander Nelson Viscount Bridport. Duke of Bronte Born 23 Dec 1814. Died 4 June 1904. So he giveth his beloved sleep."
Peter Penry-Jones who plays Gayforth was married to Angela Thorne from 1967 until his death in 2009.