UpGood luck on this keeping a watch
I've been looking at this VOSA guide which seems quite comprehensive
At the start of the document it talks about the SVA inspection accepting some US and Canadian standards as long as the trailer is unmodified....
Reading it a few times I'm assuming it just means they accept the tyres and construction as OK (e.g. even though they aren't E marked tyres) but I assume the lights, hitch and brakes all need altering to pass SVA.
Which then begs the question: if you have altered the hitch, brakes and lights your trailer is no longer unmodified from manufacture so does the above acceptance of FMVSS/CMVSS apply?
If I do end up shipping I am thinking I may do all the lights and hitch electrics conversion to UK type here before it ships so that when it lands in the UK it looks normal.
Would then just be the 50mm hitch, handbrake and jocky wheel to do once imported.