999inks is one of the leading suppliers of ink cartridges and laser toner in the United Kingdom. They say "We are the one place for all of your printing needs. With the option to buy all of your ink at discount prices, you'll never have to pay high street prices again! Whatever model of printer you have, we have the ink cartridges you need at the prices you want. Choose any of your favourite name brands, HP ink cartridges, Lexmark ink, Epson, Dell, Canon and more, all at our incredibly low prices. And best of all we don't charge delivery fees. Whether you are buying inkjet cartridges for your home office or buying in bulk for a corporate or educational group, 999inks is the place to start your shopping."
They certainly carry a large range and they do sell both OEM and compatible format. They are based in London and supply schools, colleges, universities and government establishments. Their "free delivery" only applies to UK addresses. The name 999 is a play on the UK emergency services telephone number. The implication being that you will get a fast response. Hmmm.
You can visit their web site by clicking this link --> 999inks or click on one of the banners.