I assume you have confirmation of this from your publisher? I'm very confused about what Tor UK are publishing and what they aren't, at the moment; Amazon UK has listings for various writers (including yourself, Peter Watts, Karl Schroeder) that appear to be UK editions (no "US list price", prices are £6.99 for pb and £17.99 for hb) but which I have never seen on UK bookshop shelves.
Well, I'm going near a bookshop when I leave work this evening, so I'll check in and see what's what. (For what it's worth, you're not on the Tor UK site either -- that I can find -- and I haven't been sent any review copies for Strange Horizons. Which is fine, since we already reviewed the US editions, but Tor UK does normally send stuff.)