Marianne Oldham is a British actress.
Foyle's War
as Patricia Scott
Father Brown
as Joyce Webber
Endeavour
as Dr. Magdalena "Maggie" Byrne
The Musketeers
as Catherine
The Midwich Cuckoos
as Jane Colter
Absolutely Anything
as Rosie
WPC 56
as Deborah Burns
A Very English Scandal
as Stella Levy
The Living and the Dead
as Mary Denning
The Crimson Field
as Rosalie Berwick
Distance
as Susan
Finding Your Feet
as Nicola
National Theatre Live: Rosencrantz & Guildenstern Are Dead
as Gertrude
A Monster Calls
as Mum / Ensemble
