Jamelia

The team are sent to buy some everyday cars to convert into stretch limousines; pop stars Jamelia and Lemar, and DJ Chris Moyles are the guests.

Eight celebrities arrive at base camp in Costa Rica and discuss what they expect to encounter. They jump from a helicopter into water, and Bear tells them what he's looking for in a survivor.

Host Jimmy Carr and team captains Sean Lock and Jon Richardson discuss the topical events that set the great British public's chins wagging; Sean and Jon are joined by John Hannah, Example, Holly Walsh and Bobby Mair.

Tensions mount as the celebrities work their way down a ravine through dense jungle. They finally reach camp, where they'll spend the night, only to find live scorpions on the dinner menu.

Jimmy Carr hosts the topical comedy panel show as team captains Sean Lock and Jason Manford battle it out to discover who knows what is going on in Britain today. With guests Claudia Winkleman, Mark Watson, Josie Long, and Jamelia.

On this part of the mission Bear is particularly looking for the celebrities to be cheerful in the face of adversity, an essential characteristic for a 'Survivor'. They are transported by military truck to a nearby two-mile cave system. Bear meets them and offers them breakfast, providing a medicinal boost before sending them into the caves - a big dose of zinc. The zinc, of course, comes from a jungle source - in this case, tarantulas.