There are quite a few luthier suppliers now in the UK, and their range of supplies is growing rapidly. I've noticed it in the two years since I really started getting into refinishing and then assembling guitars. A lot import some of the StewMac range, others offer their own alternatives.
But each time you browse, you can always find that one new tool that you can't do without. Which is why I've spent far more that I should over the past few weeks and need to be rather frugal before Christmas!