Actor
Jonathan Newth
Born 1939 · Edmonton, London, England, UK
Jonathan Newth is a British actor who has appeared extensively in British television drama for over 50 years. Newth trained at the Central School of Speech and Drama. Newth's theatre work includes appearances with the RSC, in the West End and on Broadway. Newth's television credits include Emergency Ward 10, The Six Wives of Henry VIII, Ace of Wands, The Troubleshooters, Z-Cars, Callan, Van der Valk, The Brothers, Softly, Softly, Poldark, Doctor Who (Underworld), Notorious Woman, Secret Army (Barsacq), The Professionals, The Nightmare Man, The Day of the Triffids, Tenko (Colonel Clifford Jefferson), Triangle, Angels, Juliet Bravo, After Henry, The Adventures of Sherlock Holmes ("The Bruce-Partington Plans"), Boon, Bugs, The Bill, Agatha Christie's Poirot (Dumb Witness), Peak Practice and Heartbeat.
Acting

The Crown
Buckingham Palace Page · 2016

Doctor Who
Orfe · 1963

Agatha Christie's Poirot
Dr Grainger · 1989

Sherlock Holmes
Colonel Valentine Walter · 1984

North Sea Hijack
Kirk · 1980

The Professionals
James Tibbs · 1977

The Lost Honour of Christopher Jefferies
Geoffrey · 2014

Casualty
Dr. Elliott · 1986

Carry On Spying
Guard (uncredited) · 1964

Heartbeat
Derek Lester · 1992

The Affair of the Necklace
Magistrate de Marce · 2001

The Six Wives of Henry VIII
George, Viscount Rochford · 1970

Tenko
Clifford Jefferson · 1981

Incognito
Judge · 1997

The Day of the Triffids
Dr Soames · 1981

Secret Army
Jean Barsacq · 1977

The Elusive Pimpernel
Lord Hastings · 1969

Poldark
Captain Blamey · 1975

Tennis Court
Harry Dowd · 1984

Champions
Mr Griffin Jones · 1984
The Squad
Insp Williams · 1980

Missing from Home
Tony Walters · 1984

A Voyage Round My Father
Boustead · 1984

Spider's Web
Henry Hailsham-Brown · 1982