A quick guide to the new faces in BBC1's Merlin.

1. Colin Morgan: Merlin
Morgan graduated from the Royal Scottish Academy of Music and Drama in 2007. He has acted alongside David Tennant in Doctor Who series four and also appeared in The Catherine Tate Show.

2. Angel Coulby - Gwen
Angel studied drama at the Queen Margaret College in Edinburgh before breaking into acting with a part in 'Orrible with Johnny Vaughan. She has appeared in Holby City and acclaimed prison comedy The Visit.

3. Bradley James - Arthur
James has already made his mark in ITV1's Lewis and Shine's teen drama Dis/Connected.

4. Katie McGrath - Morgana
Originally from Dublin, her film and television work includes Eden and
The Tudors.