Ku sii wad qodobkan - Watson wuxuu ku dhashay Bristol hooyo Wales ah iyo aabe Ingiriis ah. Wuxuu leeyahay walaalo mataano ah oo la yiraahdo Emma iyo Lucy iyo walaal, Paul. Wuxuu dhigan jiray Henleaze Junior School ka dibna Bristol Grammar School, oo ah iskuul maalinle ah oo madaxbanaan halkaas oo uu ku guuleystay abaalmarinta 'Gabbler of the Year', ka hor inta uusan aadin Queens 'College, Cambridge, halkaas oo uu ku bartay Ingiriisiga, isagoo ku qalin jabiyay sharaf heer sare ah. Jaamacadda wuxuu xubin ka ahaa kooxda Footlights oo uu la joogay Stefan Golaszewski, Tim Key iyo Dan Stevens. Waxa uu ka mid ahaa riwaayadda oo loo magacaabay qaybta ugu wanaagsan ee cusub ee abaalmarinta majaajillada Perrier Comedy
S ee 2001 Edinburgh Festival Fringe iyo sidoo kale co-directed a revue la Key.