Yes, a parking charge notice issued by Highview Parking is legal because it's an invoice that has to be issued correctly. If they use the law to issue the invoice, the vehicle keeper will be liable to pay it if its not paid.
Can I ignore Highview Parking?
Highview Parking are not known to issue many court claims to enforce private parking tickets. ... If you have received a court claim from Highview Parking our recommendation is: Do not ignore it! If you don't defend the claim, then it will default against you.
Can I ignore a parking charge notice?
Parking Charge Notices cannot be ignored, even if you refuse to pay and want to appeal you must interact with them. At its simplest level, avoiding a Parking Charge means you miss out on the cheaper payment cost. At its most serious, it can see you being sent additional reminders before finally being taken to court.