Fantasy drama Merlin returns to BBC One for a fourth series next month. CultBox took a trip down to the set in Cardiff recently and chatted to a number of the cast.

> Order the Series 4 Volume 1 DVD on Amazon.

In the second of our exclusive Merlin interviews, Katie McGrath discusses playing the ‘new Morgana’, missing having scenes with the regular cast and “bossing around hot men in general”…