Now I'm reassured by everyones helpful comments (thanks) - I'm really looking forward to getting this from Andrew at Trusty Time - getting the updated QR photos asap.
ROLGMT088C - Pro Hunter GMT PVD Blk Ceramic Bez Swiss 2836 MOVEMENT: Nickle Plated Swiss Eta 2836-2 Modified to Rolex Calibre 3187 Markings and Bridges, Automatic Movement, 25J, 28800bph (GMT Independently Adjustable)
Although when i get it I'm temped to buy this (below) genuine Prohunter NATO black strap for £70 (From The link below) so it looks more like this GEN (see below) - unless anyone can suggest another source instead of the Gen shop (http://www.discoverprohunter.com/en/)