If it is the same gun I am thinking of, it is either a Purdey or a H & H, I cannot remember which. A very good friend of mine, who posts here, saw the gun a couple years ago before it was delivered to Will. As I recall the story he told me, Will sold his company out to a larger corporate enterprise, and ordered a bespoke English gun. The gun was being delivered to Will from England and my friend got to see it and handle it beforehand. I will not divulge who that friend is, unless he sees this and comes on and provides more information. It may not even be the same gun ...... or, it may. But, the new owner was Will Primos, of that I am certain.
If he does post about it you can take anything he says concerning it to the bank.
All my best, SRH