Frederick was educated in Germany and France. He came to England in 1939 and took up acting at the suggestion of his English headmaster. He attended the Guildhall School of Music and Drama in London between 1946 and 1948 and started his stage career at preston Rep in 1949. Many rep seasons in provinces before West End appearances including 'The Comedy of Errors', 'Lock Up Your Daughters', 'The Potsdam Quartet', 'Big Fish, Little Fish', 'For Adult...
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At the Fountainhead (Of German Strength)
As Kurt Langsdorf
Cold Comfort Farm
As Doctor Adolph Müdel
Indiana Jones and the Last Crusade
As World War One Ace
St. Ursula's in Danger
As Mr. Forson
Scorpio
As Novins
One of Those Things
As Melchior
Song of Norway
As Henrik Ibsen
The Looking Glass War
As Pilot
Nijinsky
As Gabriel Astruc
Ice Cold in Alex
As 2nd German Officer
The One That Got Away
As German Prisoner
The Seven-Per-Cent Solution
As Marker
Doctor Who: Planet of Evil
As Sorenson
Doctor Who: The Invisible Enemy
As Professor Marius
Selling Hitler
As Fritz Stiefel
The Black Tent
As Koch
Play It Cool
As Male Receptionist
The Passage
As German Major
Der Abschlußtag
As Harry Day
Probation Officer
As Norman Warren
Slaughter Day
As Klaus
Voyage of the Damned
As Werner Mannheim
Winterspelt 1944
As Major Robert Wheeler
I Was Monty's Double
As Junior German Officer
Pakbo
As Jim
Doctor Who: The Savages
As Jano
The Limbo Line
Keeping Up Appearances
As Millburn
The Sweeney
As Goldman
Remington Steele
As Edvard Jensen
Department S
As Major Harwood
Doctor Who
As Sorenson
Z-Cars
Shoestring
The Avengers
As Benson
The Persuaders!
As Luther
Jason King
Minder
As Inspector Klingmann
Callan
Yes Minister
Dixon of Dock Green
As John Charles Walton
Barlow
Doomwatch
As Richard Massingham
The Hanged Man
As Hans Deiter
The Doombolt Chase
Interpol Calling
As Bernarde
The Adventures of Sir Lancelot
As Sir Christopher
The New Avengers
As Jones
One Step Beyond
As Johann
Angels
Warship
Fall of Eagles
As Holstein
Festival
As Kinesias
Sir Francis Drake
As Vicary
Amelia
ITV Play of the Week
As Bequeville
Boy Meets Girls
I Woke Up One Morning
Detective
The Kenny Everett Television Show
As Self
One-Upmanship
The Jazz Age
N.U.T.S.
Thirty-Minute Theatre
The Chief
Graf Yoster gibt sich die Ehre
As Sir Adam
Justice
As Wilkinson
The Main Chance
As Peter Jarratt
Return of the Saint
As Inspector Grant
Pretenders
As Joachim
Miss Marple: The Body in the Library
As Colonel Melchett
Some Mothers Do 'Ave 'Em
As Mr Barker
Miss Marple
As Colonel Melchett
The Protectors
As Bergen
The Professionals
As Schuman