Nicholas Courtney

William Nicholas Stone Courtney was a British actor, most famous for playing Brigadier Alistair Gordon LethbridgeStewart in the BBC science fiction television series Doctor Who.

Courtney was born in Cairo, Egypt, the son of a British diplomat, and was educated in France, Kenya and Egypt. On his maternal side, Courtney was descended from the New Zealand politician John Cuff. He did his national service in the British Army, leaving aftermonths as a private, not wanting to pursue a military career. He moved to England to join Londons Webber Douglas Academy of Dramatic Art. After two years doing repertory theatre in Northampton, he became resident in London in 1961.

Source: Wikipedia