Doctor Who guest star Donald Hewlett, best know for his role as Lieutenant-Colonel Charles Reynolds in the 70′s sitcom It Ain’t Half Hot Mum, has died, aged 90.

Hewlett passed away after a long battle with illness at the Chelsea and Westminster Hospital in west London on Saturday the BBC reports.

Hewlett made his only appearance in Doctor Who as Hardiman in the 1971 classic The Claws of Axos but will always be remembered as the Commanding officer in the World War II British India based sitcom It Ain’t Half Hot Mum which ran from 1974-1981.

He is survived by his wife, Therese, and five children including daughter Siobhan, who is also an actress and has appeared in both Torchwood and Sherlock.