Sadly Town & Parish Councils can often get away with failing to comply with legislative requirements and acting unlawfully like this. The only issue could be if somebody submits a freedom of Information request for the exact information on the AGAR. If the Council still refuse to provide it, a complaint could be lodged to the ICO. Ultimately, if the ICO cannot persuade the Council to supply it, they could issue a Section 54 notice on the Council which if not complied with could result in a court summons.