Kit Connor started acting when he was 8. His film roles include playing lead role of Tom in the film Get Santa. Also Boy in Mr Holmes and Simon Crowhurst in The Mercy. His TV work includes playing Archie Beckles in Rocket's Island, Joey in The Frankenstein Chronicles, young Petya Rostov in War & Peace and Bob Sheehan in SS-GB. He also played the role of Small Boy in Welcome Home, Captain Fox! at the Donmar Warehouse in 2016.