Nicholas Courtney, a veteran Doctor Who actor, has died at the age of 81.
Nicholas was best known for playing Brigadier Alistair Lethbridge-Stewart on Doctor Who.
His agent told the BBC he passed away in London after a short illness.
The actor made his first Doctor Who appearance in 1965 playing a character named Bret Vyon.
He also worked on other shows including, The Avengers, The Champions, and Callan and Minder. After Doctor Who he had parts in The Bill, Casualty and Doctors.
Nicholas became an honorary president of the Doctor Who Appreciation Society in 1997 in recognition of appearing in 107 episodes!
Mark Gatiss, Doctor Who writer, remembered Nicholas as “a childhood hero and the sweetest of gentlemen”.