Clive, who likes to tell a joke or two, has breathing difficulties. Samuel has crashed his motorbike and been thrown into the road. And two-year-old Florence's parents think she has swallowed a coin.

Kitty, who's eight, has had two epileptic seizures and has a worryingly high temperature. Hitin has been assaulted on a night out, and doctors are worried that he has a bleed on his brain.