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The offences relate to special betting markets that let customers wager on the exact date of the general election.
The then-prime minister, Rishi Sunak, announced 4 July 2024 as the election date on 22 May 2024. However, internal planning for that date had already begun at 10 Downing Street and Conservative Campaign Headquarters before the announcement.
Anthony Lee’s senior campaigning role gave him access to confidential discussions about the election timing. Rather than keeping that information confidential, he placed bets and passed it to his wife. She then used the information to place her own bets.
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In addition to illegal gambling, investigators suspect extensive tax evasion, with a projected tax shortfall of about €77.6 million for 2024.
The DSWV, representing licensed sports-betting operators, broadly welcomed the law enforcement action as a necessary response to the illegal market’s growth and associated risks.
“This successful investigation clearly demonstrates the scale that the illegal gambling market has now reached,” said Mathias Dahms, president of the DSWV.
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At the same time, prediction market operators are facing regulatory tussles in the US. State regulators are moving to shut down the firms under gambling laws. The companies say their contracts should be regulated at the federal level as derivatives.
However, the sector has grown substantially despite such disputes. Bernstein predicted in April that annual prediction market volume could reach $1 trillion by 2030. The research estimated volume was around $51 billion in 2025 and could grow to around $240 billion in 2026.
The partnership with Yahoo Finance wraps up as prediction markets push for broader distribution across financial media, sports, and entertainment platforms. For Polymarket, the loss of the Yahoo Finance hub is one distribution channel, but other partnerships remain intact.
