I was in the Milton Keynes Lego store on Saturday 25th. A few SW sets were substantially discounted that day, including :
- Rogue Shadow half price
- The Twilight half price
- UCS General Grievous half price
A few non-SW bargains as well, also at half price - Troll Warship, some of the Factory sets (not Market Street, however), Creator Stegosaurus.
No idea how long stock will last, or how long the deal will last, but give them a call. I believe that they'll even sell over the phone and send. I think postage is 10 pounds, but since the discount on the above sets is at least 25 pounds you'll still get a bargain even if they need to post.
Good luck !