Richard Tice, deputy leader of Britain’s Reform UK party, is under investigation by the Parliamentary Commissioner for Standards over a potential failure to declare an interest during a parliamentary debate, officials confirmed. The inquiry was announced on August 3, three months after a separate probe was opened into the party’s leader, Nigel Farage.

Tice stated on social media platform X that the investigation concerns whether he should have disclosed a specific interest at the beginning of a debate focused on UK democracy and Israeli influence. He described the complaint as being lodged by what he called an “anti Israel” lobby group. The watchdog did not provide further details but indicated the investigation relates to rule six of the parliamentary code of conduct, which mandates that members must openly declare any relevant interests during parliamentary proceedings or official communications.

An ongoing investigation by the commissioner does not imply wrongdoing, and the process is aimed at determining if the standards code has been breached.

This development comes amid continuing scrutiny of Reform UK. The commissioner launched an inquiry into Farage in May following revelations of a £5 million donation from a cryptocurrency billionaire. That inquiry was suspended after Farage resigned his parliamentary seat in July. Farage subsequently announced he would seek re-election, accusing the political establishment of attempting to damage his reputation through a campaign focused on his financial dealings.

British police are simultaneously investigating at least £500,000 in donations to Reform UK, a probe that Tice described as a “politically motivated smear campaign.” The party, which had led several opinion polls for over a year, recently appeared to lose ground to the governing Labour Party, which has gained momentum under new Prime Minister Andy Burnham.

Tice confirmed the complaint revolves around whether he should have referenced his register of interests at the outset of the debate. His registered interests include a trip to Israel in September of the previous year. The investigation signals heightened oversight of Reform UK’s financial disclosures and parliamentary conduct as it navigates a shifting political landscape.