www.abebooks.co.uk – Millions of new and second-hand books. Easily searched. ***

www.amazon.co.uk – Not just books but toys, computers, clothes and DIY. Useful reviews and book lists *****

www.whsmith.co.uk – sometimes cheaper than Amazon **

www.waterstones.co.uk - another great British book seller **

www.audible.co.uk – One free audio book monthly for £7.99 per month ***