Knight Frank, one of London’s leading property consultancies, has upgraded its forecast for prime central and outer London residential prices in 2026, projecting 3.5% annual growth across both segments — a notable revision upward from the previous estimates of 1.2% and 2.8% respectively. The upgrade comes as the Renters’ Rights Act takes effect, the Iran conflict reshapes investor preferences, and a partial return-migration of Middle East-based Britons to London supports rental demand.
The forecast revision
Knight Frank’s UK Housing Market Forecast Q2 2026 revises upward the firm’s expectations for prime central London (the £5 million-plus market in Mayfair, Belgravia, Knightsbridge, and Kensington) and prime outer London (the £1-5 million market across Hampstead, St John’s Wood, Notting Hill, Wandsworth, and similar districts). Both segments are now projected to grow by 3.5% in 2026, an improvement from the firm’s January estimates of 1.2% for prime central and 2.8% for prime outer.
The mainstream London market — the £400,000-£1 million segment that dominates outer-borough volume — is expected to flatline across 2026 before recovering in 2027 and 2028. The mainstream UK market overall is forecast to grow 1.5% in 2026, 3% in 2027, and 4% in 2028, supported by anticipated wage growth and gradual reduction in mortgage rates.
Why the upgrade
Tom Bill, Knight Frank’s head of UK residential research, identifies four drivers for the prime market revision. The first is currency: sterling has weakened against the dollar and most Asian currencies, making London property meaningfully cheaper for international buyers — particularly those from the Gulf, the United States, and Hong Kong. A 5-7% currency tailwind translates directly into demand for the same nominal price.
The second is relative value: prime central London is still trading approximately 30% below its 2014 real-terms peak, while comparable global cities (New York, Sydney, Singapore, Hong Kong) have moved well above their previous peaks. For long-horizon investors, London now appears in the value bracket rather than the momentum bracket.
The third is geopolitical migration: since the Iran conflict began in late February, there has been a measurable uptick in demand for high-end rentals from Britons and dual-nationals moving back from the Gulf and from Israeli households relocating temporarily to London. This rental demand has hardened landlord pricing power, which in turn has supported sales values for similar stock.
The fourth is the Renters’ Rights Act dynamic: by tightening rules on rental properties, the legislation has reduced the supply of good-quality private rentals as some smaller landlords exit the market. The remaining stock has gained pricing power, which has increased capital values for buy-to-let stock — a counterintuitive outcome of legislation designed to protect tenants.
Where the gains are concentrated
The forecast upgrade is not evenly distributed. Within prime central London, Mayfair, Knightsbridge and Belgravia are expected to lead the recovery, supported by overseas capital and the supply-constrained nature of those markets. Kensington and Chelsea is projected slightly lower at around 2.5-3%, reflecting the larger stock of three-to-six-bedroom houses where domestic buyer affordability is more sensitive to mortgage rates.
Within prime outer London, Hampstead and Highgate are projected to outperform on rental demand and family-buyer interest. Wandsworth, Battersea, and Clapham are forecast slightly behind, reflecting the sensitivity of mid-prime stock to mortgage cost movements. Sutton, Uxbridge and Ilford — identified by Zoopla as having the strongest upswing potential in the outer ring — are expected to perform well within their narrower price bands.
The country market diverges
Notable in the forecast is the divergence between London and the rest of England. Knight Frank expects prime country market prices to fall 2.5% in 2026, having declined 5.5% in the year to March 2026. The country market — covering £750,000-plus rural and urban properties outside London — has been hit hardest by mortgage rate sensitivity, the geopolitical uncertainty over agricultural and inheritance tax changes, and the post-pandemic correction of the city-to-country migration boom.
This pattern echoes the broader 2021-2026 cycle: the country market boomed during 2020-2022 as London households relocated, then has been correcting since 2023 as some return to the capital and others find that rural living costs have risen faster than expected.
What this means for sellers and buyers
For sellers in prime central London, the forecast upgrade suggests holding stock through 2026 may be rewarded with capital appreciation. For buyers, the message is that the window for value — particularly in the £2-5 million bracket — may be narrowing if the upgraded forecast plays out.
For mainstream London — the £400,000-£900,000 mortgaged market — the picture is more difficult. With prices forecast to flatline and mortgage rates having risen sharply in April, transaction volumes are likely to remain subdued through summer 2026. Recovery is forecast for 2027 and beyond, dependent on the Bank of England resuming rate cuts.
— Edward Blackwell, London Capital Post
