Matt Smith and David Tennant are among the famous names appearing in a BBC trailer for this year's Red Nose Day fund-raiser.
The Comic Relief charity event, which marks its 25th anniversary this year, takes place on Friday 15th March, with a BBC One telethon highlighting the good work being done. Money raised helps people in the UK and Africa.
In the trailer, narrated by famous fan and renowned impersonator Jon Culshaw, Smith says he will decide what he will do for Red Nose Day when he gets his fund-raising kit, and Tennant is shown briefly while on a charity visit to Africa.
Also seen in it are David Walliams, who jokingly states with a straight face: "I'm not doing anything. I've already done enough!" (he has swum both the Channel and 140 miles along the River Thames for Sport Relief), and Rowan Atkinson who, in 1999, appeared in the spoof adventure The Curse of Fatal Death, written for Comic Relief by Steven Moffat.
Red Nose Day has been a biennial event since 1989, and the show has had some kind of connection with it since returning to our TV screens as a regular series. In 2007, Tennant appeared with Catherine Tate in a Comic Relief sketch that heavily referenced Doctor Who - it can be seen above by clicking on the relevant link - while for 2009's telethon a special mini-episode of The Sarah Jane Adventures was shown and Tennant chose Doctor Who as his specialist subject on a celebrity edition of Mastermind, competing against Davina McCall. 2011's Red Nose Day included a two-part mini-episode featuring the Doctor, Amy, and Rory.
Comic Relief was co-founded by Richard Curtis.