Anthony Lee was sentenced to 10 months and two weeks' imprisonment, suspended for 12 months, while his wife Laura received four months and two weeks' imprisonment, suspended for a year. Amy Hind, a former Tory party employee, was sentenced to six months' imprisonment, suspended for a year, after pleading guilty to the same offence.
The court heard that then-Prime Minister Rishi Sunak held a private Downing Street meeting on 10 March to discuss possible election dates, months before the July 2024 vote. Neither Lee nor his wife attended, but the couple began betting online on the election being held in July or between July and September.
Prosecutor Zoe Johnson said: "Although not at Number 10, the overwhelming inference is that Anthony Lee was receiving inside information as the meeting went on and was acting upon it. Together they were using it to make a profit for themselves."
Lee placed or tried to place 71 bets, while his wife placed eight and attempted a ninth. The court heard Hind placed four bets and made three further unsuccessful attempts worth £767, £700 and £750.
Sentencing the three, Judge Tony Baumgartner said their conduct "risked undermining" the confidence the public has in the Conservative Party "as an institution", "undermining trust in the democratic process" and the "integrity of the gambling system".
Representing Lee, barrister Richard Pratt said his client did not concretely know the working date of the election, arguing it "still represented a gamble from his point of view" and that "it was always possible the prime minister could change his mind".
The trio are now banned from accessing or using online gambling websites for 12 months. Anthony Lee must complete 100 hours of unpaid work and pay more than £6,600 in compensation, Laura Lee must complete 40 hours and pay £4,265, and Hind must complete 50 hours.
Katharine Diamond, General Counsel of the Gambling Commission, said "justice has been served", describing the case as "a first of its kind" and a demonstration of the regulator's "commitment to protecting the integrity of betting markets".
Former Conservative MP Craig Williams, Sunak's closest parliamentary aide at the time, pleaded guilty in June and will be sentenced at a later date. Trials of other defendants are scheduled for next year and 2028.