10 new houseguests move in to the Big Brother house. We are introduced to Amma, Brian, Bubble, Paul, Helen, Narinder, Dean, Elisabeth, Penny and Stuart through a series of biography clips and we then see them enter the house, in small groups. During their first day together, Penny and Elisabeth compete for the mom role, Brian admits that he is gay and the houseguests get a surprise when they find a den in the backyard.

~A National Obsession Begins!~ Big Brother 2 launched a first for Big Brother UK history, Live Streaming! Although it had been launched for Big Brother 2000 via the Internet, Live Streaming was to prove a real hit when it began on the Channel 4 digital station E4. Viewers could even have an Interactive service which would enable them to read news from the house, select a choice of 2 different live feeds and highlights and also to vote to evict a housemate.