Walkers Crisps is giving away a free iPod mini every five minutes until the end of September.

Sharp-eyed readers may already have noticed the promotion, which features on most packets of Walkers crisps. Each packet carries a special code which consumers can send in to the company (online or by text messaging) in order to stand a chance of winning a free music player.

The promotion is only open to residents of the UK and the Republic of Ireland. People in the Channel Islands or Isle of Man can enter their codes online.

Draws will take place every five minutes from 00.05 on September 1 until midnight on the September 30. All entries received after midnight on the September 30 will be entered into one daily draw. Throughout the month of October and November draws will take place at midnight every night.