Cardinal Burns’s E4 series has just been released on DVD – and we have five copies to give away.

The disc contains all six episodes from the TV debut of Edinburgh favourites Seb Cardinal and Dustin Demri-Burns, which debuted on the digital channel last month.

The series features such characters as Cockney cab controllers Phil and Terry; office flirts Charlie and the exotic ‘New Guy’; Target Blonde, the tallest rock band in the world; camp paranormal investigators Phil and Jase; and the ‘real’ street artist Banksy.

Here is one of their sketches:

The DVD is out now on 2entertain, but to win one of our copies, just answer the question below by 5pm on July 9, when we will select a winner at random from all correct entrants. Usual terms and conditions apply, with bulk entrants disqualified.

The question is: What is the name of the energy drink that features in one of the sketches?