ive got a tip for you: if you want to replace your screen (ill probably do that in the near future), take a can of water and spray it into the air before you start opening up your GP. This will take the dust out of the air!
im from console-fix, so yea I mod them.. I did dozers mod and about 5 others from this forum.
I havent looked at the glass screen mods so far. Need to look at prices for getting a sheet of properly toughened clear glass cut into the right dimensions.
And I think console-fix would be the best place to ask to see if they are UK only... I'm half sure they do abroad as well. Then again I'm half sure they don't so you're screwed unless someone else answers or you just go to the site and find out.