Dermot O'Leary leads Comic Relief desert trek
Celebrities including Lorraine Kelly and Dermot O'Leary are to trek across the Kaisut Desert, in north Kenya, for Comic Relief.
The pair, along with Strictly Come Dancing winner Kara Tointon, singer Olly Murs and others, will begin their journey later this month.
The team will cover 100 km (62 miles) in five days.
Meanwhile, former model Katie Price and actor Joe Swash are the latest names to join Let's Dance for Comic Relief.
Comedian Marcus Brigstocke will also join such previously announced participants as Noel Fielding and Lulu on the show, which sees stars tackle famous dance routines.
Calories and camels
A BBC One documentary about Comic Relief's Kenya trek will be shown in the run-up to this year's Red Nose Day on 18 March.
Members of the team will burn an estimated 8,000 calories each day as they lead a caravan of camels carrying their camping gear and other equipment.
A Comic Relief spokeswoman said money raised would help to prevent thousands of people in Africa from going blind or contracting eye conditions.
Comedienne Ronni Ancona, actress Nadia Sawalha and Radio 4 presenter Peter White will also take part, as will Radio 1 DJ Scott Mills and singer Craig David.