While there still has been no official announcements on the availability of the V2 Extenders in the UK, Lambda-tek.com are taking pre-orders for the Linksys extenders

The part numbers for the European models are DMA2100-EU (£188.60 inc. VAT) and DMA2200-EU (£220.49 inc. VAT)

I had a quick search around for the EU model numbers found a few European sites offering the units for pre-order

No stock available on the site at the moment:

http://www.lambda-tek.com/componentshop/index.pl?origin=gbase14.2&prodID=B89855

Thanks to reader Gordon Lindsay who tipped me off