Tottenham have ended their partnership with controversial betting firm 1xBet while Chelsea and Liverpool have been told they must cease their association.
The Gambling Commission wrote to all three clubs to say any promotion of the Russian company may be unlawful, risking unlimited fines and up to 51 weeks’ imprisonment.
1xBet are no longer licensed to operate in Britain following an investigation by The Sunday Times.
They have been blacklisted because they have been used to promote betting on children’s sports, cockfighting and a pornographic casino.
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The firm is also one of the biggest advertises on websites that illegally stream Premier League games.
According to The Sunday Times, Tottenham had ‘terminated’ all its 1xBet rights, Chelsea were ‘monitoring’ the situation while Liverpool provided no comment.
Harry Kane, Virgil van Dijk and Willian are among the players who have helped promoted the betting company.
Campaign for Fairer Gambling spokesman Matt Zarb-Cousin described the situation as ‘shocking’.
Zarb-Cousin said: “It is shocking that these football clubs failed to do the most basic due diligence checks on 1xBet before signing up for these multi-million-pound deals.
“It’s an absolute debacle.”
1xBet said: “We take very seriously the allegation that 1xBet’s brand has been promoted on prohibited sites, which is strictly against our policies, and we have launched an investigation. Pending the outcome . . . we believe it is responsible to temporarily suspend our advertising activity in the UK.”