It may of course be that the AA Bill car is legitimately using a blue badge in this case.

However, in general terms, the local authority is responsible for fraudulent use of real or forged blue badges, so I'd suggest referring the matter to them so they can investigate.

I gather blue badge misuse and fraud are quite common.

Also, the display of advertising on stationary buildings is covered by planning guidance. See the following:

http://planningguidance.planningportal.g...tisements/