OTOH, the mold detail is rather poor; aside from traditional Catholic interpretation, it beats me how they can claim to know who is represented by the side and reverse figures.
Nonetheless, If I were the finder, I would have a RTV or other mold made from it for lost wax casting, so I, at least, could have myself a replica cast -- even though I were forced to hand the original over to the government.
BTW, Cirencester is in the Cotswolds and the whole area is one of the most beautiful in England. If you're going to get out of London, the Cotswolds should be very high on the list.
A couple of typical Cotswolds views:
The Inn at Fossebridge, very near where the piece was found.