If you have passed your car test after the 1st January 1997. You will have to pass a trailer test to be able to tow a trailer over 750 kg, i.e. horse box, caravan, cattle trailer. To confirm this check your driving licence to see if you have category B+E dated on your licence, if not, you will need to take a trailer test.
NO THEORY TEST REQUIRED!
Test conducted in following centers:
Belfast, Craigavon, Derry ,Omagh