Penalty Already Paid on Time
If you pay the full fixed penalty within the time limit shown on your notice, the authority is completely barred from taking any further action or prosecuting you — full stop. There is a legal assumption that payment has not been made, but that assumption is automatically overturned the moment you show proof that you did pay. This situation most commonly arises when something goes wrong on the authority's side — for example, a cheque or postal payment that was not processed correctly, or a glitch with an online payment portal — leaving their system showing the penalty as unpaid even though you paid it on time.
Legal basis
Local Authorities (Traffic Wardens) Act 1975 s.3(8)(c) and s.3(9)(b) (as substituted by s.12 RTA 2002).
How to identify this in your case
You have received a reminder, a further notice, or a summons despite already having paid the penalty on time. To challenge this, gather all of the following that apply to you: your payment receipt or reference number; a bank statement or card statement clearly showing the payment line, date, and amount; a screenshot or email confirmation from an online portal; and any other record that proves you paid in full within the deadline stated on the original notice.
Sample appeal wording
formal
Replace [PARKING DATE], [NtK DATE] etc. with your own dates before sending.
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