Davina McCall presents the live launch show as the celebrities wave goodbye to their agents, egos and loved ones and enter the Big Brother house for the very first time.

Viewers will witness the new housemates sharing their very first moments together and settling in for what could be the most uncompromising and unpredictable month of their lives.

Russell Brand returns with his Big Mouth later this evening.

Wednesday 3 January 2007 on C4.