London’s residential property market has entered its most uncertain phase since the 2022 mini-budget, with the latest data showing the capital underperforming every other UK region. According to Land Registry data released in April 2026, average London house prices recorded the largest month-on-month drop of any region between January and February, falling -1.9%, while three regions — Yorkshire & the Humber, the North East and the North West — saw annual rises above 3%. The reversal of fortunes between “Northern” and “London” markets, long predicted by analysts, has crystallised into hard data.
Halifax: the March 2026 -0.5% slip and the £299,677 average
The Halifax House Price Index for March 2026, published 8 April, recorded a -0.5% monthly fall following a 0.3% February rise, putting the average UK property at £299,677. Annual growth slowed to +0.8% from +1.2% the previous month. Amanda Bryden, Head of Mortgages at Halifax, attributed the slowdown to “wide uncertainty regarding the conflict in the Middle East”, with concerns about higher energy prices pushing up inflation expectations and feeding through to mortgage rates. London remained the weakest UK region, with negative annual growth confirmed by both Halifax and the Land Registry.
The mortgage shock: 4.83% to 5.78% in eight weeks
The most acute pressure on London buyers has come from the mortgage market. According to Moneyfacts, the average two-year fixed mortgage deal rose from 4.83% on 1 March to 5.78% by 1 May — a 95-basis-point spike in eight weeks. Five-year fixes climbed from 4.95% to 5.68% over the same window. With approximately 1.6 million UK households due to remortgage in 2026, the timing could hardly be worse. MoneySavingExpert and major lenders advise borrowers nearing the end of fixed deals to “lock in a rate now, rather than holding off in the hope of further falls”, while keeping the deal under review through completion.
Rightmove: average asking £373,971 in April, but -3% YoY
The Rightmove House Price Index for April 2026 showed the average UK property asking price at £373,971, up 0.8% from £371,042 in March, but -3.0% versus April 2025. Rightmove noted that “with mortgage rates remaining elevated due to the war in Iran, it’s not a surprise that price growth is proving strongest in parts of the market less exposed to higher borrowing costs.” Scotland stood out as a regional bright spot with prices rising over +4% annually. Rightmove also flagged that May’s data would give a clearer indication of the Iran war impact, since April overlaps the early shock weeks.
Zoopla and Land Registry: buyer demand collapses
The Zoopla Index showed buyer demand in March down 13% year-on-year, with the average UK house at £270,500 in February. The HM Land Registry — the most authoritative measure because it covers cash sales as well as mortgaged purchases — reported the average UK house at £267,957 in February, a rise of just 1.2% year-on-year. The Land Registry confirmed only 102,410 transactions in February, down 6% from 2025. Homes are taking 66 days on average to secure a buyer.
The £2 million mansion-tax cliff
Looming over the upper-end of the London market is the “mansion tax” announced in the November 2025 Budget, which will impose annual charges from April 2028: £2,500 per year for homes valued at £2 million or more, rising to £7,500 per year for homes at £5 million or above. Around 1% of UK homes are priced above £2 million, with London and the South East taking the brunt. Estate agents are reporting that asking prices are increasingly being set just below £2 million, and buyers are delaying decisions on properties priced too close to the threshold. The recurring nature of the tax means the chilling effect compounds annually.
Forecasts: from optimistic to cautious
The forecasts for 2026 are sliding downward as the year progresses:
- Nationwide: predicts UK house prices to rise between 2% and 4% in 2026
- Halifax: forecasts growth between 1% and 3%, citing weaker wage growth and softer labour market
- Savills: now expecting around 2%, having reined back from earlier optimism
- Zoopla: more conservative, forecasting 1.5% for 2026
- Rightmove: also forecasting 2% nationwide, with London expected to lag
What it means for London buyers and sellers
The City consensus is that London’s premium-end market faces the most painful adjustment in years. With Mayfair commanding £25,000-£40,000 per square metre and Kensington at £18,000-£30,000 per sqm, even modest percentage falls translate into six- and seven-figure paper losses for owners. For first-time buyers, by contrast, conditions are “more favourable than they have been for several years”, according to Rightmove’s 2026 forecast: better mortgage rates than 2023-25, eased lending criteria, and wage growth outpacing house-price growth — but only outside the most expensive London postcodes.
Reporting from London with reference to Halifax HPI March 2026, Rightmove HPI April 2026, Land Registry February 2026 and Moneyfacts mortgage data 1 May 2026.
