Lenny Henry sets out to discover what makes us laugh. His journey begins in the family, where humour is a way of dealing with tensions arising from the rites of passage.

Lenny Henry tries his hand at a number of different jobs in Scotland to find out about the British sense of humour in the workplace. As a factory worker, a waiter, a fire-fighter, an office worker and finally a parking attendant, Lenny discovers that laughs at work are not always just about fun.

Lenny Henry goes to Blackpool to see the British sense of humour on holiday. He discovers a pick and mix of good old-fashioned seaside sauciness, hen nights and 21st century drag acts.

We all belong to some kind of community which gives us a sense of identity, but what exactly does that 'c' word mean? Lenny Henry travels across Britain to find out if there's a shared community, and to see how it's expressed through humour.