The Prime Minister and his wife are said to be planning on hosting family and friends at 18th-century Daylesford House, in Gloucestershire, this weekend.
A huge white marquee topped with bunting had been erected in the property’s expansive grounds on Wednesday, with staff going in and out amid apparent party preparations.
Owned by Lord Bamford, the Grade I-listed mansion has been found as a replacement to Chequers – where the Johnsons had originally planned to host the party.
The Tory peer, chairman of construction equipment manufacturer JCB, has donated millions to the Conservative Party.
Boris and Carrie Johnson are said to be planning a party to celebrate their marriage
PA
A marquee is erected on the grounds of Daylesford House in Gloucestershire
Steve Parsons
Mr and Mrs Johnson had originally been planning to throw their wedding party at the Prime Minister’s official country residence, Chequers, in Buckinghamshire.
Those plans led to suggestions that Mr Johnson wanted to stay on as a caretaker premier in part to see this through, although this was denied by Downing Street.
They were said to have sent out save-the-date cards for a celebration on July 30, before deciding to change location as per a report in The Mirror.
The pair married in a low-key private ceremony at Westminster Cathedral last year.
A small group of family and friends attended the wedding, organised in strict secrecy, followed by a reception in the gardens of 10 Downing Street.
It was known Mr and Mrs Johnson planned to have a larger celebration this year after coronavirus restrictions had been relaxed.
Lord Bamford is covering at least some of the cost of the party, the Mirror reported, quoting unnamed sources.
No 10 declined to comment on the “private matter”.
It comes amid a campaign to give Tory members a choice of reinstating Mr Johnson in the ongoing leadership contest.
Mr Johnson resigned as Conservative Party leader earlier this month, following mounting pressure from Tory politicians.
But now more than 14,000 party members have signed a petition on whether Mr Johnson’s resignation should be accepted.
The petition was organised by Lord Cruddas and former MEP David Campbell-Bannerman.
Critics and commentators have rubbished the idea of a comeback, though.
The contest is being fought out between former Chancellor Rishi Sunak and Foreign Secretary Liz Truss.
After a string of leadership debates, Ms Truss appears to be the bookmakers' favourite – but there is over a month to go for Mr Sunak to regain ground.
The next Tory leader, and the country's next Prime Minister, will be confirmed on September 5.
