The Averard Hotel, in the Lancaster Gate area of London, was the hotel used (both interior and exterior) as "The Claremont". The Averard was originally built as a townhouse by a wealthy doctor before 1910. In 1925, the townhouse was reconfigured as a hotel, and has most recently been a family-run bed and breakfast. The hotel discontinued operations (as a hotel) in 2009 and the building was converted to non-hotel residential use.
Beaulieu Palace House, where some scenes in this movie were filmed, is an owner-occupied ancient palace, dating to the fourteenth century, with parts of the house and gardens open daily to the public. It is a member of the Treasure Houses of England consortium, and the National Motor Museum, founded by Lord Montagu of Beaulieu, occupies a separate building on the estate. Lord and Lady Montague and their son, Jonathan Douglas-Scott-Montagu, received an on-screen "special thanks" credit.
The song sung by Georgina Hale in this movie: "It's Never Too Late To Fall In Love" was also sung by Hale and Max Adrian in Ken Russell's The Boy Friend (1971).