I received notification this month that discussions are going on at the moment as to the viability of annual tests for trailers. I doubt that legislation will be needed for this – pressure from insurance companies may well ensure that testing will be a prerequisite should any trailer be used on the road. Failure to comply with an annual test could possibly lead to the invalidation of the towing vehicle’s insurance. Should the trailer suffer a defect which results in an accident then the driver of the towing vehicle could be personally liable for the damage. This is my opinion, you understand.