Lydia Dorothy West (born 24 June 1993) is a British actress. She is known for her roles in the BBC One series Years and Years and the Channel 4 series It's a Sin, the latter of which earned her a BAFTA nomination.
Early life
West is from London. Her maternal grandparents are Irish, and her father is from Montserrat. Her mother is a nurse and her father works in charity. She has an older sister and an older brother.
West trained in ballet, tap, jazz and contemporary dance as a teenager, but quit after a foot injury. After graduating from university with a degree in business, she worked as a personal assistant and trained part-time at Identity School of Acting (IDSA).
Career
After graduation from IDSA, West was cast as Bethany Bisme-Lyons in Russell T Davies' 2019 BBC One and HBO series Years and Years. She starred in the 2021 Channel 4 series It's a Sin, also by Davies. She played Jill Baxter, who is loosely based on one of Davies' friends (Jill Nalder). Davies called her character "the heart of the story", a view echoed by Jack King of I-D who described the character as the "de facto matriarch". Her performance was described as a "standout" one by i.
In 2024, West co-starred alongside Nicola Coughlan in the Channel 4 and Tubi series Big Mood, a "vivacious and rebellious portrayal of female friendship when infiltrated by the complexities of a serious mental illness." In September 2025, Channel 4 announced that West had been made an executive producer for Big Mood's second season.