There's no bracket. There are 2 holes where presumably a plate was screwed on, and other holes bunged up, and residue from sticky pads. So all sorts have been applied. It is 28 yrs old after all! Ok, just had a close look and I see the right light cluster differs to the left - underside appears to have a light for the number plate. It looks like the number plate was closer in dimension (8"x7") to a motorcycle plate but not sure that is legal on a caravan. The standard ones for car are a massive 11"x8" approx. Guess I go for that. What's best - plastic plate with sticky pads? (an old car of mine had stick-on plates and kept coming off when the sun shone so a bit wary!) Anji