I am similarly being persecuted by Horizon Parking Ltd, for taking over 2 hours to do my shopping at the local Tesco extra, they have just installed surveliance cameras which record In and out traffic.
So i'm in the middle now of challenging this saying I am a regular Tesco customer, but it takes nearly 3 hours each time as I only shop at one month intervals. They have rejected my first challenge & want to see bank statements to 'prove' I am a Tesco customer. Pah, I don't think they are entitled to that so I have send redacted copies of the statements with all transactions except the Tesco ones blacked out.
And I just got another one, I think the sods used that data in my first challenge to locate the time interval when I also took more than 2 hours to do my shopping.