
Acting
Karl Johnson is a Welsh actor, appearing on stage, film and television. His most notable role to date is the title role in Derek Jarman's 1993 film Wittgenstein and those of Cato the Younger in the television drama series Rome and of Twister Turrill in the BBC costume drama Lark Rise to Candleford.

National Theatre Live: The Crucible

Dream Horse
as Kerby

National Theatre Live: Under Milk Wood
as Richard Jenkins

Endgame & Rough for Theatre II
as Nagg

The Last Vermeer
as Bernard Bakker

Peterloo
as Lord Sidmouth, the Home Secretary

King Lear
as Fool

The Death of Stalin
as Dr. Lukomsky

Kaleidoscope
as John

The Carer
as Joseph

Truelove
as Tom · 3 ep.

Wolf
as Colonel Frink · 3 ep.

The Following Events Are Based on a Pack of Lies
as Bill · 5 ep.

Halo
as Hierarch Truth (voice) · 3 ep.

Suspicion
as Eric Cresswell · 2 ep.

Too Close
as James de Cadenet · 3 ep.

Born to Kill
as Mr. Williams · 4 ep.

Mum
as Reg · 18 ep.

Lovesick
as Richard · 1 ep.

Atlantis
as Itheus · 1 ep.
2014