Make any purchase in store and you can buy a pack of 40 AA or 40 AAA batteries for half price at £7.49 each. The cheapest thing I could find was a £1 screwdriver so brings the total to £8.49.
There was a maximum of 4 per transaction.
I have a receipt and will see if I can upload it but I didn't buy the £1 screwdriver I purchased a fan for £1.99
Saw these on the counter and plenty of stock available in store in Crawley. Was told by member of staff that it should be national (unsure if true). Not available online I think.