PCN code 01: parked in a restricted street during prescribed hours
What this contravention code means, and how to appeal it · On-Street
Code 01 means the council or TfL recorded your vehicle as parked in a restricted street during prescribed hours. A valid permit or payment that simply didn't show, or signage that wasn't clear at the time, is a real basis to challenge this rather than pay it.
Full description on the ticket: “Parked in a restricted street during prescribed hours.”
Letter after the code, like 01a?
A letter after the number narrows down the exact circumstances: a means temporary traffic order, j means camera (CCTV) enforcement, o means blue Badge holder, y means obscured/illegible permit (Blue Badge contraventions only), z means out of date permit (Blue Badge contraventions only). We factor the exact suffix into your letter automatically.
Can I appeal this?
Yes. This is a statutory Penalty Charge Notice from a council or TfL, not a private charge, so you have a formal right to challenge it before it escalates into a Charge Certificate.