A government source suggested the businessman had been due to occupy the villa on the paradise island of Mustique – but then agreed to make it available for their 10-day stay.
Until his declaration in the Commons register, it was assumed that Mr Johnson, who earned £275,000 a year for his newspaper columns, had paid for the holiday himself.
No 10 brushed off questions about why the prime minister had not simply reimbursed Mr Ross and avoided the controversy altogether.
Jon Trickett, the shadow Cabinet Office minister, said the public had a right to know whether the prime minister could “knowingly make a false entry into the register”.
“Transparency is crucial to ensuring the public have confidence that elected members of this House have not been unduly influenced by any donations or gifts that they may receive,” his letter to the commissioner said.
“For this reason, I request that you to investigate whether the prime minister has followed all transparency requirements when registering the donation.”
But Mr Johnson’s spokesman insisted: “The relevant transparency requirements have been met as set out in the register of financial interests. This is a benefit in kind from David Ross.
Inside Politics newsletter
The latest news on Brexit, politics and beyond direct to your inbox
“The Cabinet Office are aware of the declaration and are content that it is appropriate.”
A No 10 source argued Labour’s protest was “out of date” after the second statement from Mr Ross, who worked with Mr Johnson in his time as London mayor.
He was forced to quit as deputy chair of Carphone Warehouse, and from the City Hall role, after failing to disclose that he had used his shares in the business as security for a multi-million pound loan.
A former tax exile and friend of David Cameron, with a fortune estimated at £1bn, Mr Ross has donated hundreds of thousands of pounds to the Conservative party.
Mr Johnson’s holiday had already attracted criticism, breaking with the practice of his two Tory predecessors, Theresa May and Mr Cameron, who shunned luxury breaks for modest trips in the UK and Europe.
The Independent The International Olympic Committee [IOC] has been accused of “an abdication of responsibility” after failing to investigate alleged labour and safety violations at venues built for Tokyo 2020. In a report published last year, Building and Wood Workers’ International (BWI), a global construction union, highlighted “the dark side” to this summer’s Games, exposing […]
The Independent Police spoiled a couple’s Valentine’s Day meal at a luxury restaurant by swooping in to arrest them in connection with a burglary. Officers lay in wait for the man and woman, aged in their thirties, after they booked a reservation in central London’s Mayfair district. They moved in as the pair walked to […]
The Independent Log in using your social network account OR Want an ad-free experience?Subscribe to Independent Premium. View offers LiveUpdated Monday 10 February 2020 09:12 News > UK > UK Politics Boris Johnson news – live: PM faces backlash over ‘mansion tax plan’ and HS2, as Starmer’s team claim ‘dirty tricks’ over data breach claims […]