Waterstones £2 off when you spend £20 promotional code BM4541
£2 off when you spend £20. T&Cs: Offer valid from the 1st of August to the 31st of August 2012. The offer only includes all print books and is therefore not applicable on the audio books, eBooks, eReaders or eReading accessories. Offer can be applied to both full price and discounted books. Offer only available at Waterstones.com, not in Waterstones stores. Single use only.