Andrew Marr's The Making of Modern Britain (BBC2, 9pm) has been wonderfully satisfying so far, with its eclectic selection of events, people, cultural changes and politics that he uses to sum things up so neatly. Tonight Marr moves on past the Great War and into the Jazz Age, as Britain entered a post-war boom period that saw sweeping experimentation in culture - from art to literature and music. It was the birth period for decadence in the form of nightclubs, new dances and cocktails - the Roaring Twenties equivalent of that old staple - sex, drugs and rock 'n' roll. The BBC was founded and people began buying radios. Politically, Michael Collins took on Lloyd George over the Irish issue, the General Strike kicked off in 1926 and the entire decade fell apart with the Wall Street Crash - that may have been across the Atlantic, but its repercussions were still felt in the UK. Only Marr could pull all this together into an hour's worth of compelling social history. Don't miss.