03/08/2012 10:14 BST | Updated 03/10/2012 06:12 BST

TRAILER: Merlin Returns To The BBC - Series 5 Sees The Return To The Round Table

The BBC, intent on promoting their autumn drama content throughout the Olympics, just to remind us there is a world beyond sport, will be debuting the first full-length trailer for Merlin during tonight's schedule.

Merlin is back on our screens for a fifth series

The fifth series of Merlin is on its way back to our screens, and, finally, it's all about the sword. Watch the trailer below...

Cast members returning include Colin Morgan (Merlin), Bradley James (King Arthur), Angel Coulby (Queen Gwen), Katie McGrath (Morgana) and Richard Wilson (Gaius), as well as the knights of the round table.

Special guest stars already announced are Liam Cunningham, Lindsay Duncan and John Bradley.