I once registered my car in a hotel car park when I went for a meal with a friend. We overstayed as we were deep in conversation and lost track of the time as the restaurant wasn't busy so we were not needing to vacate our table. I spoke to the guy behind the bar when I realised and he said to sign in again, but he also said if I received a letter about a fine to contact them and he'd sort it. If you have a receipt for your visit / credit card statement with the payment for lunch or somesuch you can prove why you were there and hopefully they will show leniency.
I recently met some friends in a pub and they told me to sign my car in. I wouldn't have noticed the machine if they hadn't said so it's easy to do.
Restoring Britain’s health to 2014 levels could add 2% to GDP- i.e. £72 billion
What "back then" inconvenience would annoy today's youngsters?


