Supermarket shelves
Media playback is unsupported on your device
Video

Supermarkets agree to price and discounts rules

The Office of Fair Trading has warned leading supermarkets to observe rules on the special offers they make to customers in the run-up to Christmas.

Eight supermarkets have agreed to ensure that the offers and price promotions are fair.

They are Tesco, Sainsbury's, Morrisons, Waitrose, Marks and Spencer, Aldi, the Co-op and Lidl.

Asda, which has not yet signed up, said it was considering the revised code.

Simon Gompertz reports.

Go to next video: Supermarkets' Christmas hours plea