Fake Wonka chocolate bars containing bogus "golden tickets" have been seized by Suffolk trading standards officers.
Several boxes of the bars, each labelled as containing five prize-winning tickets, were found in shops in Ipswich and Haverhill.
Trading standards officers were acting on intelligence received by the BBC's Fake Britain programme.
The bars contravened labelling requirements and could not legally be described as milk chocolate.
The fake promotion was based on Roald Dahl's book Charlie and the Chocolate Factory, which has spawned two film adaptations.
In the book and the films, children who found golden tickets in the bars won a trip to Willy Wonka's chocolate factory,
But Nestle, which owns the trademark, said it had no Willy Wonka competitions operating in Britain and was not selling any Wonka-branded products.
'Mislead the public'
It said the fake bars were easy to spot, since no genuine Wonka bars had been made since 2010.
The fake bars have no name and address on them and do not display the Nestlé trademark.
The Trading Standards Institute said every fake Wonka bar seized across the country contained a ticket, but no information on how or where consumers could claim their prize.
Tristram Singh, Suffolk trading standards officer, said: "We are very concerned about the sale of these suspect chocolate bars.
"Not only do they mislead the public with the promise of a non-existent prize, but they are poor quality and breach food labelling laws.
"We understand it can be tempting to purchase cheap deals but consumers should be aware of the wider implications."