Posted by Robert Atkinson 2 on 27/07/2021 19:54:47:
Doing substantial modification to the trailer i.e. from tent to load carrying would almost certaintly require an new inspection and approval. Many will say "not a problem". Howevert if you get stopped (trailers are often stopped due to level of theft) or have an accident they won't pay your fine or take the point for you… Insurance may be an issue too if you have an accident. If another car is damaged they have to pay the third party, but that does not stop them coming after you to get it back if you had a un inspected trailer.
Up to you to decide on the level of risk you are happy with.
Robert G8RPI.
Thanks for raising this point – it's always worth rechecking.
This page (screenshot below) looks like it might be useful, but none of the linked sections/pages refer to trailers.
https://www.gov.uk/vehicle-approval
The next page (screenshot below) appears more useful but I suspect it may apply only to large goods trailers and not small trailers of O1 class.
https://www.gov.uk/apply-vehicle-test-certificate-lorry-trailer
Perhaps the best way forward will be to phone an approved test centre to confirm what rules actually apply.
Edited By AJAX on 27/07/2021 23:26:45