Company accounts for Thorn In The Side Limited show a jump in cash of around £1.4m for the year ending May 2024.
At the end of May 2025, 12 months after Farage completed the purchase of the property in Surrey, the cash balance on the company accounts had increased and the accounts do not show any dividends paid.
Harborne, a Thailand-based British businessman, gave £5m to Farage on 5 April 2024, two months before he announced he would stand in that year’s general election.
In April, Harborne told The Telegraph , he “wasn’t expecting anything in return apart from ensuring his safety” when referring to the gift.
Harborne also said he gave the money to Farage “because of my great admiration for the decades of work he had done to achieve Brexit”.
Parliamentary rules state that new MPs must declare any donations received in the 12 months before they were elected.
The payment did not appear on Farage’s declaration of interests and only became public knowledge after being reported by the Guardian newspaper last month.
Reform UK has consistently said it does not believe the payment needed to be declared because it was a “personal, unconditional gift”.
Harborne has gone on to become Reform’s biggest donor and gave the party £12m in 2025.
Farage has said that Harborne gave him the money to pay for his lifetime security.
The Parliamentary Standards Commissioner has launched an inquiry into whether Farage broke Commons rules by not declaring the £5m payment from Harborne .
On Thursday, Farage told The Sun newspaper that the payment was “given as a reward for campaigning for Brexit” and that he was “not in the least bit worried” about the inquiry.
