So basically, she never parked in the first place, having not been able to make payment.
I very much doubt the car park is enforced via CCTV, it is much more likely to be by CEO patrol. So if she arrived and left inside the patrol period, their opportunity to serve a PCN is lost.
Having now looked at the car park using your link, it is very familiar to me, as in the late 50s and 60s, it was the bus station and called "The Wharf". The bus company, Thames Valley, had offices and bus crew facilities in the old wharf building. So every day during term time I would arrive in the morning on the 110 bus from Tadley, and then get on a school shuttle up to Newbury Grammar School. Then in the afternoon, walk down from school, and get the 110 back home, come rain, shine and snow.
Memories, memories !
