This is what the Us has to say on the matter, when it comes to what the UK has to say I think a crystal ball would be more fruitful than searching their web site. Catlin US Dept of the Treasury 1.The illustration must be of a size less than three-fourths or more than one and one-half, in linear dimension, of each part of any matter so illustrated; 2. The illustration must be one sided; 3. All negatives, plates, digitized storage medium, graphic files, magnetic medium, optical storage devices, and any other thing used in the making of the illustration that contain an image of the illustration or any part thereof shall be destroyed and or deleted or erased after their final use in accordance with this section.