I've mentioned them previously in this forum. The prices are good, and the quality of colour prints I get, using compatibles, is no different from using the Canon product. (My printer is a Canon S630, not a budget machine, and capable of very very good output)
You may have to use the phone (01772-654455) for some cartridges as the website only lists a small number of those available.
My mate, who has an HP 890C, buys a special black refill container which temprarily sits on the top of a standard HP black cartridge for his printer; it refills the cartridge with two or three times more than the standard model normally holds - price is around £7.60 plus VAT.
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