as

King Peter

as

Vice Adm. Payne

as

Professor Bernard Quatermass

as

Hugh Fitzooth

as

Inspector Eliot

as

Colonel Wilkes

as

the editor

as

Austin Ruthyn

as

Trevor Mangin

as

Dr Charles Ackroyd

as

Ricardi

as

Commanding Officer, Initial Training Wing

as

The Training Company Commanding Officer

as

van Zijl

as

Maj. Richards

as

Ackroyd

as

Rev. John Rider

as

Chester

as

Mate of Q-Boat

as

Allan Hayden

as

Tom Evans

as

Hubert Perrin

as

Allan Norton

as

Ellaby