Hi all, thanks for the positive comments :-D
To answer some questions:
> Brake cables: these are routed from the drum plates to the centre of the middle cross-member, not attached yet in the photos.
> Final cost: As stated previously i was looking for it to be under £2k all in (thats the full braked trailer, finished, galvanised, VOSA tested and approved, winch, lighting, ramps, 4-point wheel tie-downs, basically a ready-to-go package) - it is looking to be well under this, but will confirm once ive calculated all costs.
> I'm working to get the thing fully finished in the next couple of weeks and hopefully out to some shows!
I need to do a good amount of loaded road testing with it to be absolutely sure the design is strong enough, so would not anticipate any customer trailers this season - i have to be 200% sure the design is durable.
On the positive side ive shown this to a few other forums that i frequent (non-mini) and they all love the concept, a big advantage of the modular design is it can be widened / lengthened for other cars to fit.