Neighbourhood Watch is veteran playwright Alan Ayckbourn's 75th play. It is a strongly political drama set in an upper middle class neighbourhood. The protagonists Martin and Hilda are siblings and new residents at Bluebell Hill, which overlooks a working class housing estate.
The siblings meet a few of the locals at their housewarming party. After Martin encounters a young boy, who he assumes to be trespassing through his garden, the pair decide to set up a Neighbourhood Watch group. When the group decide to go ahead without the involvement of any police officers, the previously quiet inhabitants of Bluebell Hill become vigilant and the play takes a darker turn.