
The Long Arm
The True Inside Story of Scotland Yard's Crime Busters!
Scotland Yard detectives attempt to solve a spate of safe robberies across England beginning with clues found at the latest burglary in London. The film is notable for using a police procedural style made popular by Ealing in their 1950 film The Blue Lamp. It is known in the US as The Third Key.
Director Charles Frend
Cast

George Rose
Slob

Ian Bannen
The Young Workman - Stanley James

Maureen Delaney
Mrs. Stevens, the daily help

Fred Davis

Harry Locke
Secondhand Dealer

Peter Welch
CID Man (uncredited)

Dorothy Alison
Mary Halliday

Richard Leech
Nightwatchman / Gilson

Jameson Clark
Detective Superintendent Ogilvie

Richard Davies
Detective (uncredited)

Nicholas Parsons
Police Constable Bates

Jack McNaughton

Arthur Rigby
Detective Inspector at Chester

Meredith Edwards
Mr. Thomas

John Stratton
Sergeant Ward

Vincent Ball
P.C. at Hospital (uncredited)

Peter Burton
Creasey

Maureen Davis
The Young Workman's Wife - Mrs. James

Frederick Treves
Detective tailing Creasey (uncredited)

Ralph Truman
Colonel Blenkinsop

Alec McCowen
House Surgeon

Roy Purcell

Meadows White

Sam Kydd
Police Constable in Information Room

Joss Ambler
Cashier at Shipping Office

John Paul

Geoffrey Keen
Chief Superintendent Jim Malcolm

David Davies
Welsh Police Constable

William Mervyn
Manager of Festival Hall

Stratford Johns
Constable (uncredited)

David Lodge
Detective at Car Lot (uncredited)

Harold Goodwin
Official at Somerset House

Guy Standeven
Detective (uncredited)

Fred Griffiths

George Holdcroft

Robert Moor

Jack Hawkins
Supt Tom Halliday

Glyn Houston
Detective Sergeant in 'Q' car

John Welsh
House Agent at Shepperton

Pat Ryan

Sydney Tafler
Stone

Barry Keegan
Detective Constable in Hospital Ward

Frazer Hines
Urchin (uncredited)

Martin Wyldeck
Officer in Criminal Records Department (uncredited)