You could ask to see a copy of their CCTV operators licence. Also ask for a copy of the original recording, if you can't read the number plate without zooming in then it can't be used as evidence only the original is admissible (or so I believe) they may ask for a admin fee, but you are entitled to a copy of all evidence to build a case, so refuse to pay the admin fee. As someone else mentioned planning permission for the scheme is another root you could go.