Despite record interest from North America, international demand in Britain overall fell 10pc in the past year.
Ms Eccles said that Labour’s harsh tax policies had discouraged international buyers from settling permanently, with many of these investors buying second homes instead.
Scrapping the non-dom status had a particularly bad effect, she added. Until last April, some UK residents could claim the status and escape tax on foreign earnings.
Higher stamp duty costs and a greater tax burden had also made the UK less attractive to investors abroad.
Aneisha Beveridge, of Hamptons, said: “An international buyer purchasing a £1m home in England would now face a stamp duty bill of £63,750, rising to £113,750 if they were buying a second home or a buy‑to‑let.
“Even as rental yields improve, those upfront costs are becoming harder to justify, pushing investment elsewhere.”
European buyers remained the most interested, making up 54pc of overseas demand. This was down 8pc from 10 years ago, before Brexit.
Middle Eastern buyers accounted for just 5pc of demand, with demand falling sharply following the Iran war, reducing 27pc month on month.
