A designer underwear firm has been fined £1,000 after pleading guilty to five offences of illegal flyposting.
Posters were found around the city centre
Agent Provocateur was prosecuted by Birmingham City Council after posters advertising the "greatest lingerie show on earth" were found around the city.
A council spokesman said they were found on cable boxes, car park hoardings and empty properties.
The council said the lingerie company had acted irresponsibly. The firm said the council was overzealous.
'No clear ruling'
Joseph Corre, co-owner of Agent Provocateur, said there should be a review of the current laws over billboards and flyposting.
"The fact there is no clear rulings on it from the law courts, because the law has not been tested properly due to its pettiness, speaks volumes.
"It does, however, allow overzealous council officials to undertake personal crusades against whom they wish," he said.
A large proportion of so-called legitimate billboards were in fact illegal as they did not have planning permission, he said.
Councillor Neil Eustace, chairman of the council's public protection committee: "We are especially disappointed that a company of Agent Provocateur's size and status should act so irresponsibly and with such blatant disregard for the law.
"Flyposting not only harms the appearance of our city, but can also affect community spirit, damage the reputation of an area and ultimately create an environment which breeds further forms of anti-social behaviour and criminal activity."
The prosecution was brought under the Clean Neighbourhoods and Environment Act 2005.