I would definitely look to donate your UFOs. As you know, this board is pretty friendly!
You can search for members by location, so I would send a PM to some of the recently active UK members.
To find them, click on "Member List" near the top of this page
When the list of members comes up, click on the "Search Members" drop down, (it's under W X Y Z)
Select "Advanced Search"
Type "UK" in the location box,
In the "Last Post is after" box, I would put in 6 months, so 2015-10-01
Then click Search Now at the bottom of the page.