At the moment Amazon have the Brita Multi-Fit water filter cartridges for just £3.23 per pack of three. Buy five packs and receive free SuperSaver delivery, making a total of £16.15 for fifteen cartridges...
* Brita Multifit Water Filter Cartridges
* Removal of chlorine,Limescale and impurities
* Fits range of Brita Classic and Kenwood, Aquaselect and Boots water filter jugs
* Will filter 1 month's supply of water for the average family
* Suitable for all water types