Rishi Sunak is under investigation after facing allegations of a possible failure to declare the shares his wife holds in a childcare agency that was boosted by the Budget.
Parliament’s standards watchdog opened the inquiry into the Prime Minister under rules demanding MPs are “open and frank” when declaring their interests.
No 10 said the Prime Minister will clarify how it was declared as a ministerial interest, rather than to the Commons.
As MPs returned from their Easter break, an update from Parliamentary Commissioner for Standards Daniel Greenberg showed he had opened the investigation under the Commons code of conduct on Thursday.
Downing Street declined to set out when Mr Sunak registered the interest, but a No 10 spokeswoman said: “We are happy to assist the commissioner to clarify how this has been transparently declared as a ministerial interest.”
Mr Sunak faced demands to “come clean” about his family shares last month after being questioned by MPs over why the childcare policy favoured private firms.
Appearing before the Liaison Committee, he did not mention Ms Murty’s shares in the firm, in which she has been listed as a shareholder on Companies House.
Questioning why the sum doubles to £1,200 if workers sign up through an agency, Labour MP Catherine McKinnell asked if Mr Sunak had any interests to declare.
“No, all my disclosures are declared in the normal way,” Mr Sunak said.
Koru Kids, which is one of six childminder agencies listed on the Government’s website, welcomed the new incentives in the Budget as “great”.
At the time the possible conflict of interest emerged, Mr Sunak’s press secretary said the interest would be included in the updated statement of ministers’ interests, due out in May.
But it seems Mr Greenberg’s investigation appears to centre on whether the Prime Minister should have declared the interest to MPs.
He said the new list of ministerial interests, which has not been updated for nearly a year, would be published “shortly”.
Deputy Labour leader Angela Rayner said delay has “left a transparency black hole which is enabling the Prime Minister and those he has appointed to dodge proper scrutiny of their affairs”.
“If Rishi Sunak has got nothing to hide, he should commit to publishing the register before May’s elections so the public can see for themselves,” she added.
It was last compiled by Lord Geidt, who resigned as Boris Johnson’s ethics adviser after a tumultuous period under the then-prime minister.
Mr Sunak did not appoint a successor as ministerial interests adviser until December, when Sir Laurie Magnus took on the role.
The Prime Minister entered No 10 in October promising “integrity, professionalism and accountability at every level”.
He has since been fined by police for not wearing a seatbelt, adding to the fixed-penalty notice he was handed for a lockdown breach alongside Mr Johnson.
Liberal Democrat chief whip Wendy Chamberlain said: “Another day and another accusation of a Conservative Prime Minister bending the rules.
“After months of Conservative sleaze and scandal, the public just want a government which is focused on the country, rather than saving their own skin.”
