Matt Lucas said starring in Doctor Who was an “emotional thing” for him due to the fact that he and his late partner were both big fans of the show.
Former Little Britain star Matt, 43, returns to television screens as the character Nardole when the 10th series of the BBC One show stars on April 15.
Fans will have previously seen the character featured in the 2015 and 2016 Christmas Specials, so his return marks his first permanent run in the show.
Talking at a screening of the first episode at London’s Ham Yard Hotel, Matt said: “I wanted to be in the show for a while but I had been a bit nervous about being in the show.
“Partly because I’m a fan and partly because my late partner was a huge fan of it and so it was a bit of an emotional thing for me and I needed to be ready and enough time had passed for me to say ‘OK, I’m ready to do this’ and once I was ready then I wanted to come back in it and be in it more.”
Matt married Kevin McGee in a civil partnership in December 2006. The couple divorced just over two years later and McGee died in 2009.
The 10th series will be the swansong for current showrunner Steven Moffat and the Time Lord, Peter Capaldi, who will make his final appearance as the Doctor in the 2017 Christmas special.
Doctor Who returns to BBC One on Saturday April 15, with the first episode of series 10, The Pilot.