The Human Jungle

The Wrong Arm of the Law

The Piper's Tune

Danger Within

A Night to Remember

The Silent Enemy

Man in the Shadow

The Last Man to Hang

I Am a Camera

The Dam Busters

The Purple Plain

Conflict of Wings

The Good Die Young

They Who Dare

The Clue of the Missing Ape

Malta Story

Genevieve

Appointment in London

Gift Horse

Angels One Five

William Harold Henry Siddons (17 September 1922 – 4 November 1963) was a British film and television actor, appearing in Genevieve, The Dam Busters, Appointment in London, They Who Dare, The Purple Plain, Quatermass and the Pit, A Night To Remember and The Wrong Arm of the Law. He served in Bomber Command during the Second World War as a flight engineer, latterly with 582 Squadron as the Flight Engineer Leader on its formation in April 1944 and is a descendant of Sarah Siddons.
Born in Belfast, Northern Ireland, on 17 September 1922, he was found dead in his car on 4 November 1963 aged 41, apparently by suicide. He was buried in the parish churchyard of Little Gaddesden, Hertfordshire, with the motto Per ardua ad astra on his gravestone.

Harold Siddons