Supports: Concert for the victims of the tsunami
Charlotte Church is the latest celebrity to confirm she will be taking part in the concert for tsunami victims at Cardiff's Millennium Stadium.
The 18 year-old singer approached organisers and told them: "I was touched by what happened and wanted to help in any way I could."
Church will join a line-up that includes Eric Clapton, Lemar, Craig David, Snow Patrol, the Manic Street Preachers, Badly Drawn Boy, Embrace and Aled Jones.
The organisers of the event described demand for tickets as "overwhelming", with 20,000 sold in the first hour and all 60,000 gone within three days.
Now they are looking at the possibility of increasing the capacity.
The concert will take place on 22 January and there are talks about broadcasting the event.
Johnny Vegas, better known for his love of ale rather than exercise, is urging people to run the London Marathon for John Grooms. He said: "Get out of the pub and put your training clothes on." But due to "time commitments" the comedian will not be taking part himself.
Sue Nicholls, alias Audrey Roberts from Coronation Street, is backing animal charity PDSA's drive to recruit 2,000 volunteers to work in the charity's 179 shops. Some 125 volunteers are needed weekly to ensure the successful running of each shop. The actress said: "Whether you have two or 20 hours to spare, please volunteer today."
Christopher Parker, who plays Spencer Moon in EastEnders, and Top of the Pops presenter Fearne Cotton are filming a documentary in Africa for Comic Relief. Details are still under wraps, but the documentary is expected to be screened on Red Nose Day later in the year.
David Beckham, Unicef's newly appointed goodwill ambassador, has recorded a 30-second appeal to help the charity raise £76.5m for the 1.5 million children affected by the tsunami. The film will be distributed to Unicef offices in 37 countries, which will then negotiate with their national broadcasters for airtime. Beckham, who has supported Unicef since his Manchester United days, also visited the centre in Copenhagen from where supplies are sent out to Asia. He said: "It was one of the proudest moments of my life to be given the role of Unicef goodwill ambassador."