There was an update by email on 28/12/18 "I am still hoping to have a 3D print of the first 4 cars on display at the Stafford Show at the Start of February."
I don't see it's been mentioned yet https://Bachmann-collectorsclub.co.uk/products/00-scale-products/00-scale-locomotives/class-47-no-47778-duke-of-edinburgh-s-award-in-ews-livery.html
I felt a bit sick after seeing this:
https://www.ebay.co.uk/itm/Bachmann-DELTIC-PROTOTYPE-IN-BR-MAROON-OLIVIAS-COMMISSIONED-REPAINT-c-w-SOUND/233035747602?hash=item3642035112:g:LYQAAOSwEONcCV06:rk:49:pf:0
see Rails of Sheffield's listings,
55015 br blue white cabs
D9019 post 1965 ttg
D9009 BR Blue pre tops
D9002 ttg as preserved
55002 ttg 1980 version
D9008 TTG as delivered (no nameplates)