Anne Robinson and Phillip Schofield host another live interactive test, showing in two parts, which this time sets 70 multiple-choice questions on general knowledge. For viewers at home, the examination can be taken by using the internet, digital television, a mobile phone, a scorecard or, most simply, with a pen and paper. At the same time, six groups - cabin crew, domestic goddesses, estate agents, examiners, football supporters and plumbers - answer the same questions in the studio, where they are joined by celebrity participants.
Concludes at 9.25pm after the news.
(S) (W) [web address removed]
BBCi: digital viewers can access special interactive options via the handset BBC Book: Test the Nation: the IQ Book is available from [web address removed], £6.99 Keep the score: page 8