Eating five tomatoes a day could protect against sunburn and premature skin ageing, new research suggests.

A study at Manchester University found that the fruit improved the skin's capacity to protect itself against UV rays.

Dermatology scientist, Prof Mark Birch-Machin said: "You don't have to eat an excessive amount of tomatoes to experience the effect if you are already eating a tomato-based diet with plenty of things like spaghetti and pizza toppings."