The Traitors series 4 launch viewing figures confirmed by BBC after surprise twist 2026-01-02 John W. News 0 BBC’s The Traitors series 4 launched on New Year’s Day with Claudia Winkleman introducing a secret fourth traitor Source: https://www.express.co.uk/showbiz/tv-radio/2152800/traitors-series-3-draws-6-4-million-viewers-most-watched-debut READ from source