Ingham made his debut in Manchester with the Library Theatre Company, and then he moved to London's Old Vic.

After playing Sejanus in Granada TV's The Caesars (1968), he had a short spell as an ambitious government minister in The Power Game in 1969.

He was acclaimed for his performance as King Pellinore in the 1981-82 revival of Camelot starring Richard Harris.

In 1986, he voiced Basil of Baker Street, the lead character of Disney's The Great Mouse Detective.

[4][5] In 1991–92, Bingham was in the final cast of Andrew Lloyd Webber's Aspects of Love, opposite Sarah Brightman on Broadway.