Thanks Marc, I got the trailer from Admiral Trailers who are on the Somerset/Devon border. I've known Tony who runs it for years, they've made about half a dozen Morbic 12 trailers now and have the necessary templates etc.
I think it is worth having 10'' wheels as they ride so much better, it also comes with the lighting board and extra bits like a dolly wheel for the launcher. They always use Alko axles which give a smoother ride as opposed to indespension units.
The boats back in the garage now for final varnishing and fitting out, hopefully the sails will be ready soon!⛵🥂
Supporting all of Jon D's comments.
I'm 97% pleased with our Admiral trailer. If I needed another trailer I'd buy from them, but see my notes about some design/assembly tweaks to ask for. Notes & pics at https://forum.mymorbic.uk/Trailer-td61.html .
We elected for "Combination" ie Trailer + Launching-Trolly. More expensive than a plain trailer, but the lightness of the launching trolly is a great asset at many venues, and it means road wheels and bearings do not go near salt water.
Aside - You'll find a pretty decent cafe on the airfield accross the main road. :-)>