Derek Osborne Hart was a British actor, journalist and broadcaster best known for his appearances on the BBC

BBC

The British Broadcasting Corporation is a British public service broadcaster. Its headquarters is at Broadcasting House in the City of Westminster, London. It is the largest broadcaster in the world, with about 23,000 staff...

's current affairs programme of the 1950s and 1960s, Tonight

Tonight (1957 TV series)

Tonight was a BBC television current affairs programme presented by Cliff Michelmore and broadcast in Britain live on weekday evenings from February 1957 to 1965. The producers were the future Controller of BBC1 Donald Baverstock and the future Director-General of the BBC Alasdair Milne...

.

Hart was born in Hertfordshire and educated in Bath, England. As an interviewer, Hart's subjects included Lon Chaney Jr and John Wyndham

John Wyndham

John Wyndham Parkes Lucas Beynon Harris was an English science fiction writer who usually used the pen name John Wyndham, although he also used other combinations of his names, such as John Beynon and Lucas Parkes...

  In 1969 he interviewed Christopher Isherwood

Christopher Isherwood

Christopher William Bradshaw Isherwood was an English-American novelist.-Early life and work:Born at Wyberslegh Hall, High Lane, Cheshire in North West England, Isherwood spent his childhood in various towns where his father, a Lieutenant-Colonel in the British Army, was stationed...

 for the Omnibus documentary series. In 1968 he hosted a series of arts programmes, Tempo, in the course of which he interviewed major theatrical figures such as Michael Hordern

Michael Hordern

Sir Michael Murray Hordern was an English actor, knighted in 1983 for his services to the theatre, which stretched back to before the Second World War.-Personal life:...

 and Sybil Thorndike

Sybil Thorndike

Dame Agnes Sybil Thorndike CH DBE was a British actress.-Early life:She was born in Gainsborough, Lincolnshire to Arthur Thorndike and Agnes Macdonald. Her father was a Canon of Rochester Cathedral...

. He also narrated documentaries on subjects such as The Industrial Relations Act: An Introduction (1971) and W. Somerset Maugham

W. Somerset Maugham

William Somerset Maugham , CH was an English playwright, novelist and short story writer. He was among the most popular writers of his era and, reputedly, the highest paid author during the 1930s.-Childhood and education:...

(1969)