If you are planning to wear glitter make up, it should look soft and pretty, not harsh or dramatic. I know it's hard to find it at the stores. Here's a site that has lots of fashionable glitter make up.
Pinkcat, I don't think Ba Star delivers internationally. The site Thomas1970 provided also has some good glitter make up, and it's based in the UK. You should give it a try.
MAC cosmetics are perfect for this type of look. They have products called "mac pigments" which come in little jars and last a lifetime. You can use them for everything, especially eye shadow. They also have a product called "glitter brilliants" that would fit the look you want a little better. Each jar is about $20 US dollars, and I think they ship to the UK. If you don't want to spend so much, MAC pigments and glitter brilliants are sold all over ebay for a fraction of the price! If you want to look at them, go to: