I had one on order since October with Listers in Stratford-upon-Avon (VW dealer). I was told I should get my car xmas and I was second on list.
Sold my cooper s to make for it a couple of weeks ago thinking it can't be long now, but I nagged the dealers for a date and eventually they told me at least another 4 months away. I was very happy to say the least so I took my deposit back and ordered an RX8 instaed.
Anyway after they told me that I phoned around a lot of dealers and was told all allocations were sold for months but some did have demos if I wanted to pay over the odds.
So, well the answer really is if you can get one at list soon, I would go for that, Importers are advertising them at UK list with who knows how long for delivery.
Good luck.