A mixture of a psychological study of a ten-year-old boy, an English domestic comedy and a satire on psychologists finds young Johnny Brent, the only child of a pair of psychologists, trading an "invisible watch" to a much-younger child for a large magnet. His nurse/nanny accuses him of stealing and scolds him and he runs away. He soon convinces himself that the police are after him and following several unsuccessful attempts to get rid of the magnet, he presents it to an organizer of a fund-raising campaign for acquiring an iron-lung for the local hospital. The magnet is one of the auction items and finally is mounted on the iron-lung as a tribute to the unknown donor. Meanwhile, the father makes a completely inaccurate diagnosis for the mother of the boy's worries. In the end the boy meets the child he thought had died as a result of losing the magnet, and trades the boy...

We follow the daily activities of two London bobbies, veteran George Dixon and rookie Andy Mitchell. Meanwhile, young hoods Tom and Spud plan a series of robberies with Tom's girl Diana, a discontented beauty, as inside worker. But in their second crime, one of our heroes is shot, setting off a citywide manhunt. The killer is clever, but will he outsmart himself?

Two Welsh coal-mining brothers win a trip to London to claim a monetary prize. They are supposed to meet a newspaper reporter who will be their escort. Instead, the brothers are launched into an adventure with some London riff-raff. It is up to the reporter to look out for the brothers, and what a job it turns out to be!