MPs are being urged to slap a code of conduct on Carrie Symonds to stop “pillow talk” meddling at No 10.
Boris Johnson ’s fiancée, 32, has been accused of interfering in policy decisions and getting top jobs for her mates.
Now Ben Harris-Quinney – chair of the influential right-wing Bow Group – says Parliament must set up an oversight system for partners of PMs policed by Michael Gove ’s Cabinet Office.
He wants “constitutional constraints” akin to the US First Lady, whose official role is as White House hostess.
Mr Harris-Quinney said: “No one should be making decisions on the governance of the UK without being accountable.
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“There has to be transparency in how PMs make decisions. It can’t be done over pillow talk. And if Carrie Symonds is to advise the PM then she should be employed as an adviser.
“That means she’d be governed by the civil service code and can be fired like anyone else.
“A significant other can hardly be sacked. The role needs to be properly defined by MPs so this can never happen again.”
Carrie was accused of involvement in getting rid of aides Dominic Cummings and Lee Cain. They upset her by allegedly dubbing her Princess Nut Nut.
Mr Harris-Quinney last week called for an inquiry into the influence of Carrie, who has held a string of roles with the Tories.
It was also reported yesterday that Carrie urged the PM to sack deputy Cabinet Secretary Helen MacNamara for refusing to sign off a bill to refurbish the No10 flat. She has now taken a job with the Premier League. And Carrie also allegedly questioned the ability of Ministry of Justice boss Antonia Romero.
But some spoke out in defence of the PM’s fiancée, who is on maternity leave raising their baby son Wilf.
Tory MP Laura Trott, said: “Consideration should be given about whether some of these things would be said about a man.”
A No10 source said: “These are the latest in a series of false and malicious allegations. Miss Symonds is a private individual and plays no role in either government policy or appointments.”