Boris Johnson has been ordered to apologise for failing to declare £52,722.80 in income by the Commons standards watchdog.
The Committee on Standards said Mr Johnson “acted in breach of the House’s rules on the registration of his financial interests by failing to register remuneration within the required timetable on nine occasions”.
In its report the watchdog said this referred to a total amount £52,722.80 which represents almost seventy per cent of a Member’s salary.
It covers books penned by Mr Johnson, trips to the Oval cricket ground and his weekly Telegraph column.
It said: “The number of late registrations suggested a lack of attention to the House’s requirements, rather than inadvertent error.”
The report advised that Mr Johnson make an apology to the House of Commons.
The former Foreign Secretary has already been reprimanded by Advisory Committee on Business Appointments (Acoba), the watchdog that polices the ‘revolving door’ between Whitehall and the public sector.
In August Whitehall officials ruled it was “unacceptable” for the Tory MP to take up a lucrative column with the Daily Telegraph just three days after quitting as Foreign Secretary.
The column – which used to pay the Tory MP £267,000 a year – is where Mr Johnson made his now-infamous comments comparing burqas to “letterboxes”.
Yet by taking it Mr Johnson directly breached the Ministerial Code, which says ministers should not take up any outside jobs within three months of leaving office.