Our contact at Dell was not sure the Venue Pro was going to show up on any carrier in UK, but if you want one direct, the online retailers here are certainly willing to help you out, at a price that is.
The Dell Venue Pro has now shown up on Expansys, available for pre-order at Â£499 including VAT or $667 if you are importing from USA, with delivery expected around the 8th November.
Of note is that the entry does not claim to have 8 or 16 GB, merely listing microSD support, which leaves the question rather open.
See more at Expansys here.
Thanks Adam for the tip.