He worked in Britain and America with some of the 20th Century's most highly regarded actors and directors, including Ray Milland, Elisabeth Bergner, George Cukor and Carol Reed.

He worked in New York, Boston and Chicago for eight years, returning to Britain in 1933 to play the composer Sebastian Sanger opposite Elizabeth Bergner in Escape Me Never.

He was cast as David Naughton in Claudia, with Pamela Brown in the title role, at The St. Martin's Theatre, London, playing nearly five hundred performances between September 1942 and January 1944, making it his longest run in the West End.

Theatre World, in its November 1942 edition, reported “Big hit of the season is Rose Franklin’s play Claudia which has already achieved a phenomenal run in America.

The London production, presented by Lee Ephraim and Emile Littler, is brilliantly done, and has introduced to West End audiences an outstanding young actress in Pamela Brown.

It was the most popular of TS Eliot’s seven plays during his lifetime and focuses on a troubled married couple who, through the intervention of a mysterious stranger, settle their problems and move on with their lives.

His final appearance on the West End stage was in Guilty Party with Donald Sinden at The St Martin’s Theatre in 1961, written by Campbell Singer and George Rossand and produced by Peter Bridge.

Hugh Sinclair made his film debut in Hollywood in 1933 in Our Betters, based on the play by W. Somerset Maugham, directed by George Cukor and starring Constance Bennett.

His first British film, Escape Me Never, was an adaptation of the stage play, made in 1935 and directed by Paul Czinner, in which Sinclair reprised his role as Sebastian Sanger.

In 1936 he starred opposite Constance Cummings in the Gainsborough Pictures comedy Strangers on Honeymoon, directed by Albert de Courville and based on the 1926 novel The Northing Tramp by Edgar Wallace.

In 1939 he was cast as the Earl of Pangborough in A Girl Must Live, a British romantic comedy film directed by Carol Reed and starring Margaret Lockwood, Renee Houston and Lilli Palmer.

This was one of a series of films Carol Reed made with Margaret Lockwood featuring comic dialogue with double entendres, considered unsuitable for an American audience at the time.

This was followed by The Four Just Men, made the same year and directed by Walter Forde, in which Hugh Sinclair starred with Griffith Jones, Edward Chapman and Frank Lawton.

He appears as different characters throughout the story and his performance concludes with an address to the House of Commons in which his disguise as a Foreign Office minister is so convincing that only his distinctive vocal delivery suggests his true identity.

It was based on the 1905 novel by Edgar Wallace, produced by Ealing Studios and then re released in 1944 with an updated ending featuring newsreel of Winston Churchill and the Allied war effort as a fulfilment of the ideals of the Four.

He also made Alibi in 1942 with Margaret Lockwood and James Mason, Tomorrow We Live, with John Clements and Greta Gynt in 1943, and Flight From Folly, a musical comedy with Pat Kirkwood, released in May 1945.

The film was noted for its frank, unsparing depiction of marital abuse at a time when the subject was rarely discussed openly and became one of the biggest box office hits of the year.

On its release to DVD in 2024 Peter Bradshaw, film critic for The Guardian, gave it a 5 star review, describing it as “a gem: focused, fast-moving and a little eccentric.

Hugh Sinclair made the transition to television in the 1950s, a relatively new medium at the time, broadcast live, requiring performers to deliver their lines flawlessly and technical crews to work seamlessly to bring the shows to audiences in real-time.

He appeared in The Royalty in 1957, a six part series with Margaret Lockwood, in an adaptation of Pride and Prejudice in 1958 and the BBC comedy A Life of Bliss in 1960 - 1961 with George Cole and Moira Lister.

His arm was slightly burned but he never stopped.” He made two feature films for television, The Face of Love in 1954, a modern day adaptation of Troilus and Cressida, produced and directed by Alvin Rakoff, and Mr.

Bowling Buys a Newspaper in 1957, a psychological thriller written by Donald Henderson, directed by Stephen Harrison with Hugh Sinclair in the title role and Beryl Reid as Alice.