Flyposting is illegal and involves placing unauthorised advertising on public or private property e.g. posters.
S.224(3) of the 1990 Planning Act makes it an offence for any person to display an advertisement in contravention of the regulations. The relevant regulations are the Town and Country Planning (Control of Advertisements) Regulations 1992 (the Advertisements Regulations). Where an offence is proven the contravener shall be liable on summary conviction to a fine, currently not exceeding £1,000 (level 3 on the standard scale) and, in the case of a continuing offence, £100 for each day during which the offence continues after conviction. This provision applies to all types of unauthorised advertisement and not exclusively to flyposting.