UK rents hit record high levels again in August 2026, with the average achieved rent on a newly agreed tenancy climbing to £1,382 a month, according to the HomeLet Rental Index. That is £13 more than in July and £54 above the figure a year earlier.
For landlords, the headline growth is welcome. But the same month’s data also shows tenants stretched closer to their limits and possession claims costing thousands in lost income, making the balance between rising returns and rising risk harder to judge.
A 0.9 per cent monthly rise lifts the national average
The 0.9 per cent monthly increase takes annual rental growth across the UK to 4.1 per cent, measured against an August 2025 average of £1,328.
The index tracks rents actually achieved on new tenancies rather than advertised prices, drawing on more than 1 million references processed each year for over 5,000 UK letting agents. That makes it a closer read on what tenants are agreeing to pay, not what landlords hope to get.
Momentum was broad. Of the 12 regions tracked, 10 recorded month-on-month increases.
London and the South West lead as UK rents hit record high
Greater London remains by far the priciest market, with the average rent now at £2,238. That is 1.4 per cent up on July and 5.1 per cent higher than a year ago.
Strip out the capital and the picture is more measured. Across the rest of the UK the average stands at £1,179, a monthly gain of 0.8 per cent and an annual rise of 3.4 per cent.
The sharpest monthly moves came in Northern Ireland, where rents rose 2.4 per cent, and the South West, up 2.3 per cent, with Greater London third. Over 12 months, the South West leads at 5.2 per cent, narrowly ahead of Greater London on 5.1 per cent and Northern Ireland on 4.9 per cent.
For investors weighing where to deploy capital, that spread is instructive: the strongest growth is not confined to the capital, and two of the three fastest-rising markets sit well outside it.
Affordability strain and costly possession delays
The growth comes at a price for tenants. Renters now spend an average of 32 per cent of their income on rent, rising to 39.8 per cent for those in London, extending a widening affordability gap for UK renters.
Landlords are carrying exposure of their own. Legal for Lettings’ Quarterly CourtWatch for Q2 2026 puts the average rent lost per possession case at £6,411, with an average court delay of 4.85 months across the 63 courts it monitors.
Julie Ford CCPM, founder of Lettings Advice Service, suggested the Renters’ Rights Act may already be influencing the market. “While it is too early to draw definitive conclusions, it is possible that another consecutive rent increase reflects the impact of the Renters’ Rights Act on landlord behaviour and market dynamics,” she said.
She also questioned how long the trend can last. “With renters already allocating 32 per cent of their income to housing costs, the sector must consider whether continued rent growth is sustainable in an environment where wages are not rising at the same pace and the cost of living continues to squeeze household budgets.”
What this means for investors
Rental income is still rising, most quickly in the South West, Greater London and Northern Ireland. But with close to a third of tenant income already going on rent, and nearly 40 per cent in the capital, headroom for further increases looks thin, and arrears risk climbs as household budgets tighten.
Lengthy court timelines compound that risk. With average losses above £6,000 per possession case, rigorous referencing, rent guarantee cover and keeping continuous evidence of property condition under the Renters’ Rights Act look less like optional extras and more like core portfolio defence.
Ford’s view that the reforms may be changing landlord behaviour also sits alongside forecasts of a landlord exodus from England’s rental market. Investors who stay the course may benefit from tighter supply, but if rents keep outpacing wages, affordability rather than demand is likely to set the ceiling on returns in the months ahead.
