Stars gear up for 25th Comic Relief
It is the 25th Red Nose Day, with people up and down the country doing something funny for money in order to raise cash for Comic Relief.
Friday's live eight-hour programme will be broadcast on BBC One and Two, and is the last big show from Television Centre in West London.
The first Red Nose Day took place on 5 February 1988 and was watched by more than 30 million people.
Colin Paterson reports.