Noun
fixed penalty notice (plural fixed penalty notices)
(UK, Hong Kong) A notice served on an offender by an authorised person, which is usually for committing a minor offence. It requires the offender to pay a fixed fine within a certain period of time, or appeal against it, possibly in court.
Synonym: (initialism) FPN
“Anyone caught committing anti-social behaviour can be charged, reported to the Youth Justice Assessor or given a Fixed Penalty Notice.” Source: Internet
The public are reminded that it is an offence to dump indiscriminately and they could face a Fixed Penalty Notice or a fine imposed by the court. Source: Internet