Meanwhile, the two 'reality' stars give their own comments on being involved in the episode. Professor Brian Cox said:
I have been a Doctor Who fan for a long time - from Pyramids of Mars and The Hand of Fear onwards, with the great Tom Baker and Elisabeth Sladen. I am also a huge fan of Matt, so it was a tremendous honour to be part of one of the great institutions of British television.Meanwhile, Lord Sugar commented:
I have watched Doctor Who for over 40 years and I was flattered when they approached me to make a cameo. It's an honour to be appearing in such an iconic programme, not to mention the street cred it gives me with the grandkids.
Trailers for the finale of this run of episodes, The Angels Take Mahattan, are also now available to view online.