| Contravention code 01 | contravention | National list of parking contravention codes used by London enforcement authorities | Awaiting review |
| Contravention code 02 | contravention | National list of parking contravention codes used by London enforcement authorities | Awaiting review |
| Contravention code 12 | contravention | National list of parking contravention codes used by London enforcement authorities | Awaiting review |
| Contravention code 21 | contravention | National list of parking contravention codes used by London enforcement authorities | Awaiting review |
| Contravention code 23 | contravention | National list of parking contravention codes used by London enforcement authorities | Awaiting review |
| Contravention code 24 | contravention | National list of parking contravention codes used by London enforcement authorities | Awaiting review |
| Contravention code 30 | contravention | National list of parking contravention codes used by London enforcement authorities | Awaiting review |
| Contravention code 40 | contravention | National list of parking contravention codes used by London enforcement authorities | Awaiting review |
| Contravention code 45 | contravention | National list of parking contravention codes used by London enforcement authorities | Awaiting review |
| Contravention code 46 | contravention | National list of parking contravention codes used by London enforcement authorities | Awaiting review |
| Contravention code 47 | contravention | National list of parking contravention codes used by London enforcement authorities | Awaiting review |
| Contravention code 99 | contravention | National list of parking contravention codes used by London enforcement authorities | Awaiting review |
| The alleged contravention did not occur | statutory ground | Traffic Management Act 2004, Schedule 1 — representations against a notice to owner | Awaiting review |
| The recipient was not the owner of the vehicle at the material time | statutory ground | Traffic Management Act 2004, Schedule 1 — representations against a notice to owner | Awaiting review |
| The vehicle had been taken without the owner’s consent | statutory ground | Traffic Management Act 2004, Schedule 1 — representations against a notice to owner | Awaiting review |
| The recipient is a vehicle-hire firm and the vehicle was on hire under a hiring agreement with a signed statement of liability | statutory ground | Traffic Management Act 2004, Schedule 1 — representations against a notice to owner | Awaiting review |
| The penalty charge exceeded the amount applicable in the circumstances | statutory ground | Traffic Management Act 2004, Schedule 1 — representations against a notice to owner | Awaiting review |
| There has been a procedural impropriety on the part of the enforcement authority | statutory ground | Traffic Management Act 2004, Schedule 1 — representations against a notice to owner | Awaiting review |
| The traffic order alleged to have been contravened is invalid | statutory ground | Traffic Management Act 2004, Schedule 1 — representations against a notice to owner | Awaiting review |
| The penalty charge has already been paid, in whole or in part | statutory ground | Traffic Management Act 2004, Schedule 1 — representations against a notice to owner | Awaiting review |
| Mitigating circumstances and authority discretion | guidance | Statutory guidance to local authorities on the civil enforcement of parking contraventions | Awaiting review |
| A penalty charge notice has been issued | procedure | Traffic Management Act 2004, Part 6 and Schedule 1 | Awaiting review |
| An informal challenge has been made | procedure | Traffic Management Act 2004, Part 6 and Schedule 1 | Awaiting review |
| A Notice to Owner has been served | procedure | Traffic Management Act 2004, Part 6 and Schedule 1 | Awaiting review |
| Formal representations have been made | procedure | Traffic Management Act 2004, Part 6 and Schedule 1 | Awaiting review |
| Representations have been rejected | procedure | Traffic Management Act 2004, Part 6 and Schedule 1 | Awaiting review |
| Representations have been accepted | procedure | Traffic Management Act 2004, Part 6 and Schedule 1 | Awaiting review |
| Appeal to the independent adjudicator | procedure | Traffic Management Act 2004, Part 6 and Schedule 1 | Awaiting review |
| London Tribunals — Environment and Traffic Adjudicators | tribunal information | London Tribunals | Awaiting review |
| Private parking charges are handled differently | guidance | PCNWatch product scope | Reviewed 2026-01-01 |