1. Can you post a picture of the serial number towards the bottom-left of the page? I want to see when the letter was actually generated.
2. If the Notice was sent (as stated) on 26/05/2026, how on earth has it taken til 3rd July to reach you?
3. If the date of contravention is the same date as the Notice, then keeper liability cannot apply. Paragraph 11(1)(b) of Schedule 4 of POFA requires that the application for the keeper's details is made during the relevant period for the purposes of paragraph 9(4), which starts the day after the specified period of parking ended. The Notice is dated the same date as the parking event and, as such, the request must have been made outside of the relevant period.
Edit as we are assuming there was a windscreen ticket, so this point is irrelevant.
4. APCOA don't sue (historically, anyway, and there's no reason to think you're the exception to that rule).