Die.Baeren retrieved it from The British Library on 14 January 2012 and has held on to it since. An email was sent via Geocaching asking for it to be moved on, but no reply was received. So I think this will have to be written off - a shame really it was a beautiful coin.
This was the first trackable of any significant value that I released into the wild - the experience has 'cured' me of any desire to spend any more of my money on trackables. It's a shame really that the hobby suffers as a whole because of the actions of a few individuals.