Leader of the British Labour party Keir Starmer has been found to have breached the MPs' code of conduct eight times by failing to register financial interests on time, including gifts from football teams and the sale of a plot of land.
An inquiry into Mr Starmer was opened in June by the Parliamentary Standards Commissioner in the UK, relating to claims about late declaration of earnings and gifts, benefits or hospitality.
Speaking at the time, Mr Starmer said he was "absolutely confident" he had not broken the MPs' code of conduct, but the commissioner has opposition party leader failed to register eight interests, which is five more than those alleged in the original complaint.
However, the commissioner noted the "breaches were minor and/or inadvertent, and that there was no deliberate attempt to mislead".
The watchdog has decided the inquiry could be concluded by way of the "rectification" procedure, without a referral to the Committee on Standards, which happens in the more serious cases.
The rectification procedure entails publishing the details and an apology on the House of Commons website.
A Labour Party spokesperson said: "Keir Starmer takes his responsibilities to the Register very seriously and has apologised to the Commissioner for this inadvertent error.
"He has assured the Commissioner that his office processes have been reviewed to ensure this doesn't happen again."
In the original complaint made to the commissioner, it was alleged that between 6 March 2022 and 13 May 2022, Mr Starmer had failed on three occasions to register income and hospitality that he had accepted within the 28-day deadline.
The watchdog undertook a review of Mr Starmer register entry over the last 12 months and noted four additional late entries.
During the investigation, Mr Starmer informed the commissioner he was in the process of selling a plot of land for a sum that exceeded the £100,000 (€118,747.76) threshold for registration set.
The commissioner wrote in her report: "Sir Keir said he had been communicating with the Registrar of Members' Financial Interests on this matter, and, having had the land valued in January 2022, and put the land on the market in March 2022, he was waiting for the sale to complete so that he could register the correct value.
"I decided to include this matter as part of my inquiry."
In a letter to the commissioner dated 21 June, Mr Starmer reiterated the late declarations were "a result of an administrative error within my office", adding: "I take full responsibility for my register, and I apologise.
"My office and I have carried out a review of the process to ensure that this does not happen again."
The report also details that Mr Starmer received an €21,908.96 advance from publisher HarperCollins in April for a book he is writing.
The sum, which he has pledged to donate to charitable causes, was declared a day late, while royalties for two legal books published before the lawyer became an MP were also delayed.
Mr Starmer also received a directors' box for two people at Crystal Palace worth €854.98 on 4 April and it was not registered until 5 May.
He received four tickets for the Watford vs Arsenal game on 6 March, worth a total of €1681.40, and the gift was registered on 6 May.
Online take-away company Just Eat also gave tickets to staff for the Taste of London festival and the British Kebab awards.
The donations exceeded the 300 pounds (€356.24) limit for registration on 29 October but were not declared until 23 December.
