Sian Clifford
NEW Watch the Trailer
as Lady Isabella Lady Released
March 21, 2026 Comedy
Sian Clifford is an English actress. She is best known for playing Claire, the older sister of the titular character in the BBC comedy-drama series Fleabag and also portrayed Martha Crawley in the ITV/Amazon Studios series Vanity Fair. In 2020, she played Diana Ingram in the ITV series Quiz. Wikipedia
Filmography
See How They Run
as Edana Romney
Young Woman and the Sea
as Charlotte 'Eppy' Epstein
The Duke
as Dr. Unsworth
The Magician's Elephant
as Gloria Matienne (voice)
The Ballad of Wallis Island
as Amanda
Chevalier
as Madame de Genlis
A Serial Killer's Guide to Life
as Rebirthing Cynthia
Mother Mary
as Jade
Doctor Who: The Legend of Ruby Sunday & Empire of Death
as Kind Woman
Fry-Up
as Rosie
Dodgy Dave
as Stephanie
Real Love (Yes, It's Real Love!)
as Sally
Lady
as Lady Isabella