I have been given a trailer light board for transporting my MK, is there any law regarding the width, this one is three foot wide.

i shouldnt think its worth worrying about. though i;m sure u could find it on google quick enough

Lighting
These regulations vary slightly depending on the age of the trailer and the width of the towing vehicle, but this is what is normally required. The trailer board needs; 2 red rear lamps, 2 stop lamps, number plate and light, 2 red reflectors, 2 amber indicators, 1 rear red fog lamp, 2 white forward facing reflectors. In addition, if the trailers are more than 2.1 meters wide, they also need white forward facing lamps on the trailer board or mudguards. The lighting board must be wide enough so the outer edge of the rear lights is within 150mm of the outer edge of the boat. This lighting board should be positioned within 1 metre of the end of the total overhang (which is often the mast), or otherwise the end of the overhang would have to be lit with an addition reflector and red lamp. The lighting board should not be more than 1.5 metres off the ground. The trailer also requires at least two amber reflectors down each side.

Cheers Ben, see you Saturday. Barry

Yeah, ultimatly, theres all sorts of regs, and 3ft might not be enough, espcially as at that width it almost certainly wouldnt have a fog light on it. (not that my cars wired up to run mine anyway sadly)

Depends what your doing and how much you care about everything being right, but i wouldnt worry too much for a one off.

Daniel