You'll find KnitPro do most of the needles and hooks that Knitter's Pride do, very smilar, just slightly different names. All the main on line yarn stores here stock them (however I notice that not so many of them as many metal as rosewood etc) You don't mention the length you're after, but a set of 5 x 10cm are available on ebay for £4.10 - £4.65. They are call KnitPro Nova. Otherwise you could check the UK site of Knitter's Pride to see if they can help.
There is a huge difference between KnitPro Nova and Knitter's Pride Nova Platina: the first one is nickel plated and the second one is chrome plated. As I had an allergic reaction to my wedding ring, I am a bit afraid to buy nickel plated needles. Knitter's Pride Nova Platina would be the perfect needles for me.