I have both a 3 and 4 I could let go, but I'm in Massachusetts and shipping will be prohibitive, perhaps if nothing else pops up it'll be an option.
I'll cross post your request on a few other forums where I know there are UK members, maybe we can find something.
I've posted your request on
http://forums.sohc4.net
And
Along with your Facebook link from your other thread, hopefully someone nearby can fix you up.