Carrie Symonds’ influence at No 10 extends much further than the decor

Analysis: Boris Johnson's fiancee has no official role, but has helped shape the personnel and vision of the PM's office

She's buying gold wallpaper," Boris Johnson is said to have told panicked aides last February of his fiancee Carrie Symonds' interior decorating plans for their No 11 flat. The costs far exceeded the 30,000 allowance for prime ministers, and apparent attempts last year to cover them by other means - Conservative party funds, a charitable trust and Tory donors - appear to have failed.

As well as Dominic Cummings' diatribe over the unethical, foolish and possibly illegal" refurbishment spending saga, Helen MacNamara, the Cabinet Office's director general of propriety and ethics, was also reported to be strongly opposed.