Sally Ann Howes as Jennifer Peters

Gordon Jackson as Jock Melville

Basil Radford as The Mechanical Type

Naunton Wayne as The Mechanical Type

James Robertson Justice as Arthur Peters

Sonia Holm as Angela Carew

Nigel Buchanan as Roy Fairfax

Joyce Barbour as Aunt Mab

Campbell Cotts as John Fairfax

Cyril Chamberlain as Johnnie

Julia Lang as Carole Saunders

Percy Walsh as Editor, Evening Comet

Oliver Burt as Editor, Morning Sun

Kenneth More as Police Sgt. 'Bonzo'

Humphrey Lestocq as Radio Commentator

Vincent Ball as Hero in cinema sequence

Anne Valery as Heroine in cinema sequence

Michael Goodliffe as McPherson

Michael Balfour as Crook (uncredited)

John Boxer as Pub Landlord (uncredited)

Fred Griffiths as Truck Driver (uncredited)

Sam Kydd as Railway Ticket Clerk (uncredited)

Arthur Lowe as Archibald (uncredited)

Jack May as Newspaper Seller (uncredited)

William Mervyn as Cinema Manager (uncredited)

Douglas Seale as Jeweller's Assistant (uncredited)

André van Gyseghem as Ex-Editor of Evening Comet (uncredited)

Jack Vyvyan as Hotel Porter (uncredited)

Patrick Waddington as Airline Director (uncredited)

Michael Ward as Hairdressers' Manager (uncredited)