Smart meters are the new generation of gas and electricity meters which promise to save you time, money and energy. But there are reports of more and more horror stories of inaccurate bills and an invasion of privacy. So do they live up to the government's promise or should we listen to the horror stories?

Alexis Conran finds out if the promised savings of supermarket loyalty cards are real.

This eight-part series follows the stories of eight remarkable warships. Once titans of the sea, they now litter the seabed, their histories lost to the waves - until now.