Have a look here Glen : http://www.7dayshop.com/catalog/default.php?cat=6&type=6020&man=0&filterwords=&go=SEARCH&comp=

I've used the Fuji, Dane, Duracell, Kingston and Sandisk ones without any problems. The first one listed @ £3.99 each, for 4+ is a good deal. Since this firm is in the Channel Islands, they do not charge VAT on orders below £18. In the past, when I have ordered a quantity of the same item and the total value exceeded £18, they split the order into two packages, to avoid the VAT !!

I find them a good firm to deal with, but delivery does take a little longer due to them being 'Offshore'