Featuring exclusive bonus features – including a ‘making of’ documentary, commentaries, hilarious out-takes and deleted scenes – The Complete Fourth Series of BBC One’s Merlin is released on DVD and Blu-ray on Monday 23rd January.

> Read our review.

To celebrate, we’ve got boxsets to give away to five of our Twitter followers!

For a chance to win, just follow CultBox on Twitter and tweet the following text:

_{Win #MerlinSeries4Boxsets @cultboxtv http://bit.ly/w8GXyG}

Starring Colin Morgan, Bradley James, Angel Coulby, Katie McGrath, Anthony Head and Richard Wilson with John Hurt as the voice of the dragon, Series 4 sees the most dramatic change yet in the fortunes of our heroes and is the most exciting series so far.

> Buy the Series 4 boxset on Amazon.

With a thrilling mix of action, adventure, pure magic and the arrival of the fearless Knights of Camelot, Series 4 includes guest appearances by Gemma Jones (Spooks), Phil Davis (Doctor Who) and Nathaniel Parker (Narnia).

This competition has now closed. The winners are Colin Faulkner (@faulky01) from Northants, Leyla Bayar (@lbunny14) from Hackney, Fay mann (@loubaby2906) from Norfolk, Keith Hunt (@cunardfan) from Mid Glamorgan and Kathy Wilson (@Poohbear01010) from Essex.

Terms & Conditions:
You must be resident in the UK to enter. Employees and contributors of CultBox.co.uk and their families are not eligible to enter. Only one entry per person is permitted. The judge’s decision is final and no correspondence will be entered into. The prize may not be transferred to any other person. No cash alternative or alternative prize is available on entrant’s request, but in the event of the advertised competition prize being unavailable we reserve the right to offer an alternative prize of equal or greater value. Entry in the competition implies acceptance of these rules.