Can't see value myself.
Many design agencies in London will want a company name they can build a strong brand from plus only domainers are going to be familiar with a .org
It will lose traffic to the .co.uk, the .com and possibly even the slightly more familiar .org.uk
Can't see anyone investing to build a proper business - may get £100-£200 to a 'chancer' but will probably take you more than that in resource to find someone to buy it
Sorry just my tuppence worth