I suspect that you will need to get the trailer upgraded to 'European Spec' before you can get it registered. Assuming all the components are compliant (they should be if it's a modern trailer) you will just need to upgrade the lighting to include side marker lights, front and rear outline marker lights. Alternatively just pull it behind a UK registered vehicle, then there is no need to register it!
Originally Posted by SolarisRIB
I have a Hallmark Trailer for my Zodiac Medline 11 which is in Mallorca. The authorities here require the EU compliance papers for a trailer before it can be registered. Anyone have contact details for Hallmark? An online search only came up with retailers, not the manufacturer. Cheers