In 1960, an adaptation for stage by Louise F. Tanner was produced in Morgantown, West Virginia. Mrs. Tanner travelled to the United Kingdom to consult Hartley in person about the work.
Playwright Harold Pinter adapted the novel into a screenplay of a film of the same name (1971), directed by Joseph Losey; it was Pinter's third, and last fulfilled collaboration with Losey. It won the Palme d'Or at the 1971 Cannes Film Festival. Pinter's fourth screenplay intended to be directed by Losey was never made.
The cast includes Julie Christie as Marian Maudsley, Alan Bates as Ted Burgess, Margaret Leighton as Mrs Maudsley, Dominic Guard as the younger Leo, Michael Redgrave as the older Leo and Edward Fox as Trimingham.
Michel Legrand composed a memorable original score for the film, parts of which have been used in other works.
On 8 July 2012, a radio adaptation by Frances Byrnes and directed by Matt Thompson was broadcast on BBC Radio 3. The cast included the late Richard Griffiths as Lionel Colston, Oscar Kennedy as Leo Colston, Harriet Walter as Mrs. Maudsley, Lydia Leonard as Marian Maudsley, Amanda Root as Mrs Colston (Mother), Joseph Arkley as Ted Burgess, Blake Ritson as Viscount Trimingham, Crawford Logan as Mr Maudsley and Josef Lindsay as Marcus Maudsley. The production was re-broadcast on BBC Radio 3 on 26 May 2013.
In 1991, South African composer David Earl adapted the novel as a two-act opera.
In 2011, a musical-theatre adaptation of the novel was presented by the West Yorkshire Playhouse in Leeds, West Yorkshire; at the Derby Live! Theatre in Derby, East Midlands; and at the Royal & Derngate in Northampton, East Midlands.
Adapted by David Wood with music by Richard Taylor and lyrics by Wood and Taylor, the production was directed by Roger Haines, designed by Michael Pavelka and lit by Tim Lutkin. The musical director was Jonathan Gill.
The musical was developed by Perfect Pitch, a UK theatre company renowned for developing quality new musicals.
The production was awarded Best Musical Production at the 2012 Theatre Management Association's UK Theatre Awards, held at the Guildhall in the City of London.