MyMemory branded USB Flash Drives are going cheap at the moment on MyMemory.co.uk
4GB USB Drive - £10.99
8GB USB Drive - £17.99 (not including P&P)
They also come with a 1 year warranty.
Maybe 6% quidco too, but not sure - please confirm if you can.
There are smaller memory ones on sale too, but they're not as good an offer.