Boris Johnson failed to promptly declare outside earnings with the House of Commons authorities, a damning report has found.
The Commons Standards Committee said Mr Johnson had failed to register a 20 per cent share in a property in Somerset within the 28-day time limit.
In December, Mr Johnson was forced to make a “full and unreserved apology” in the Commons over the late declaration of more than £52,000 of income mostly relating to book royalty payments.
Kathryn Stone, the parliamentary commissioner for standards, said a “pattern of behaviour” demonstrated an “over-casual attitude towards obeying the rules of the House”.
In her ruling, she concluded: “I do not accept that this was an inadvertent breach of the rules.”
“Mr Johnson has co-operated fully with my inquiry, but his failure to check properly that he had brought his Register entry up to date during my last inquiry might be regarded as showing a lack of respect for the House’s rules and for the standards system.”
“That does not demonstrate the leadership, which one would expect of a longstanding and senior Member of the House, nor compliance with the general principles of conduct.”
He has been ordered to meet in person with Registrar of Members’ Financial Interests and receive a full read out of the rules.
The committee said any future breaches committed by Mr Johnson may call for a “more serious sanction”.
Get alerts on Boris Johnson when a new story is published