Was doing the weekly shop in my local Waitrose and came across the some Canon Colour Printer cartridges, model CL-41. The were in a little basket and there was loads of them, seems that Welwyn Garden City Waitrose is discontinuing them as I could not see any other cartridges.
I had a look on the internet and this seems by far the hottest deal out there at the moment. It was just what I was looking for my printer, sadly no black ink cartridges on offer though.
Not sure if this is a National deal so well worth a look in your local Waitrose if you need this cartridge, probably not going to be many left so you may have to be quick.