Record the chassis or VIN, weight, coupling, brakes, breakaway system, lights, tyres, floor and included equipment. Keep horse-box, boat and machinery details specific rather than relying on a generic description.
Not every UK trailer has a V5C. A commercial trailer or trailer used abroad can require the separate UK Trailer Registration service, which this agreement does not replace.
This private agreement records the facts and promises reviewed by the parties. It does not notify an authority, prove ownership in every case or replace an official form, tax, insurance, registry or registration step.