Odd, the registrant information has been updated since your first post though!
he might have sold it, but i would have thought he would come to me before selling it.
Well, he is about to miss the chance of selling seo.org.uk to me by the looks of it,
If I had this and was offered 20K for it, I'd have bitten the offering hand and arm off for it by now!
"Real Value" is interesting, as obviously there is the value and there is a value that will get someone to part with it, which could be argued is the 'real' value
As you dont have the name, you aint offered the real value....
£20k is a very good offer, but not amazing, with some work he could be P1 for a term some companies spend tens of thousands of pounds a year on.