NOTE: because of the way this forum is set up, NO ONE can respond to your post in the For Sale section. I'd suggest deleting it and posting it in another sub forum.
Tough to find a good used DR650 in UK. Many are beat on, not worth owning. There is a dealer in UK importing NEW DR's from the USA, or ... you can do it your self. Yes! it's been done.
Go onto HU, the HUBB forum for Horizon's Unlimited. Search around there in Suzuki section and also read this threadhttp://www.horizonsunlimited.com/hubb/s
Bit of long process to get the bike, but several have managed, a few different ways to proceed. Good info on above thread. So, someplace to begin. Alan Hopkins bought a bike from USA dealer, got it shipped to UK. Took a while, but he's now on the road with the bike.
Whole story is told in above thread.
There are more used DR650's in Germany as they imported them longer there. Also, some show up for sale in UK, ridden overland from Australia. I've seen a few of these over last few years.
(DR650 is still sold NEW in Oz) also, DR's still sold new in USA, Canada, Ecuador and a few other countries, IIRC. Also, quite a few show up for sale in various places throughout S. America from travelers wanting to head home. Some GREAT deals if you're headed down that way anyway.
Good luck, let us know what you find!