sentences:  Her breakthrough came in 2001 with her role in the Johnny Vaughan BBC sitcom "'Orrible".She was later chosen to play Gwen, a young woman also known as Guinevere who would later become Queen, in the BBC One fantasy TV series "Merlin".In an interview with LA Times, Coulby stated that with playing Gwen she ""liked the idea that you go on a bit of a journey as an actor, starting off as a humble maidservant, kind of a bit bumbling, and then obviously growing into this very capable queen.""