Could someone tell me what the law states with regards to the illumination of number plates in the UK? (i.e. number of lights, intensity in mcd (milli-candella)?)
I have installed a reversing camera on my car in the place of a number plate lamp holder and no longer have enough space to reinstall a bulb so I want to replace both lamp holders with 'LED Bolts' similar to this:

CHROME WHITE LED LIGHT NUMBER PLATE SCREW BOLTS
But all of these products are sold for scooters and motorbikes and I want to make sure my car would still be road worthy.