RnB heartthrob Craig David is already in the country for the five day charity trek
Today, they tested their boots and rucksacks in a three-hour acclimatisation trek. See video...
The other stars include Singer Olly Murs, actress Kara Tointon, X Factor presenter Dermot O'Leary, Daily Mirror columnist Nadia Sawalha, comedian Ronni Ancona, Radio 1 DJ Scot Mills, Radio 4 presenter Peter White and TV presenter Lorraine Kelly.
The team will be highlighting the issue of sight and meeting people in need of urgent eye care along the way.
(AP) - ** COMMERCIAL IMAGE ** This is photograph is provided by the Comic Relief BT Red Nose Desert Trek, 2011. Olly Murs tries out his tent on the first night under canvas in the desert before the start of the BT Red Nose Desert Trek 2011.