Saw this on the Raspberry Pi Google+ Page. Seems a pretty decent deal to me. Apologies if this has been posted already but I couldn't see where on a search.
Price is £17.51 but then you need to add postage unless you can do a click and collect, the cheapest I can see postage for in mainland UK is an extra £4. Great deal if you have lots of tablets/phones/cameras/raspberry pi projects and they all need memory cards. They all come with an SD card adapter too, should you find you need one (or 5!).