Lydia West is a British film and television actress best known for her breakout role in the Russell T. Davies series Years and Years in 2019 for BBC1. She returned to work with Davies on the acclaimed Channel 4 drama It's a Sin in 2021.
Modern Doctor Who has been running since 2005, and has been going strong for a long, long while. We know who was cast in the original, but what if they weren't available?
