It appears that Preston City Council are unwilling to accept the fact that ANPR Ltd have not been a member of an ATA since 1 April 2015, as this freedom of information request demonstrates.
It is not clear if ANPR Ltd can provide an effective service to Preston Council if they are unable to request keeper details from the DVLA - only members of an ATA can request details for car parking purposes.
Possibly Trevor Whitehouse is relying on the fact that the DVLA's security checks are about as useful as a using a colander as a bucket. For instance Ace Security Services have no difficulty in getting keeper details even though they are not in any ATA.
The other possibly is that the 'contigency plan' has been activated.
If anyone has received a Notice to Keeper from ANPR Ltd for a parking event dated after 1 April 2015, The Prankster would be very interested in receiving details.
The Parking Prankster