The TARDIS returns to iPlayer and BBC One on Christmas Day - but can the Doctor save Christmas everywhere, all at once?

Find out more about the upcoming Doctor Who Christmas Special 'Joy to the World' which touches on loss, love and humour.

but I think Joy forces the Doctor to look into himself and his life and question it somewhat. There are also some really funny moments between them. It was so much fun working with Nicola.

This funny and emotionally perilous documentary is a beautiful exploration of fan culture, as Matthew ultimately, and unexpectedly, finds himself a kindred part of this close-knit, yet vast ...