Saw this and hope someone can benefit. Just watch out for delivery times as I added a book which would not be delivered until 3 weeks time not good if a Christmas gift.
Some books are about £5 each RRP so savings to be had.
From 12:00 on Monday, 1, December 2014, when you buy Four Activity or Sticker Books, you will be charged £10 (“Offer”). Offer only applies to Qualifying Items purchased and dispatched from Amazon.co.uk. It does not apply to purchases made from third-party sellers at Amazon.co.uk’s Marketplace platform. This Offer ends at 23:59 on Wednesday, 31 December, 2014.
How to Claim:
1. Select all four books from the selection below and add to your Basket.
2. When you’re done shopping, click the “Proceed to Checkout” button. The Offer discount will be automatically deducted from your total order value at checkout, so the combined price for the three Qualifying Items will be £10. See Terms and Conditions.