It’s a pity you hadn’t come here for advice before you appealed and then again to POPLA. Can you show us what you put in your initial appeal and POPLA appeal.
You should have a read of your lease and tell us what it actually says about parking. What it doesn’t say about parking is equally important.
Was the PPC contracted at the location before you purchased the property or were they brought in by the management company after? If so, how was parking managed before they were contracted?
I don’t think that PMUK are particularly litigious but you have to prepare to defend any claim if they do decide to go that far. For now, you ignore the POPLA decision as it has no bearing whatsoever on any future action.
You can expect to receive reminders and debt collector letters. These can all be safely ignored. Never, ever, ever, interact with a debt collector. They are powerless even though they use scare tactics to try and get the low-hanging fruit on the gullible tree to capitulate and pay up. They are unable to do anything, no matter what they say as they are a third party to any contract allegedly breached by the driver with the PPC. Safely ignore.
Eventually, the PPC may decide to issue a claim for the alleged debt in the county court small claims track. If they do this, it is to your advantage as the only truly arbiter on whether you owe the PPC a debt, is a judge. However, even if a claim is issued, there is no guarantee that they will se it all the way to a hearing and most discontinue. They hope that an actual claim will unnerve their victim.
In a worst case scenario, if it did go all the way to a hearing and you lost, you won’t get a CCJ on your record as long as the judgment amount was paid in full within 30 days. Even then, the amount would be for less than the original claim as any fake added on damages are not allowed in the small claims track.
You have a very good chance of getting this defeated. It’s just a pity that you didn’t come here first as it would quite possible have been cancelled at POPLA stage.
So, look at your lease and answer the questions. Show us a picture of the signage, including any entrance sign.
There is now a new joint Code of Practice (CoP) issued which includes specific clauses on when a PPC should cancel a PCN for mitigation and this PPC has breached their own AoS CoP. See Annex F 1(e):
The private parking sector single Code of Practice