Commander Strax fell in glorious battle at Demon's Run when he answered The Doctor's call to arms. Or did he? Ahead of their return in Mark Gatiss' The Crimson Horror, find out how our favourite comedic Sontaran went from jingoistic Combat Medic to Victorian butler in this funny little scene.

Demon's Run: Two Days Later is part of the digital version of Doctor Who Series 7 Part 2 on Amazon and the iTunes store in the US, and will more than likely be included as an extra on the DVD/Blu-ray release in the UK, due out May 20th.