As global temperatures rise, the geography of safety, comfort and prosperity will be redrawn. Some places will flourish; others face an existential reckoning. Here is what the science, and brokers, are saying
There is a thought experiment that climate scientists have been quietly running for years, one that is increasingly finding its way from academic papers into the calculations of estate agents, insurers and, eventually, anyone who has ever wondered whether they might be moving house at exactly the wrong moment in geological history.
The question is deceptively simple: if global warming continues on its present trajectory, where in the United Kingdom will be worth living — and where will not?
The answers, drawn from a growing body of research by the Met Office, the Climate Change Committee, university departments and the government's own risk assessments, are both more nuanced and more alarming than most people appreciate. They do not suggest a uniform catastrophe. They suggest instead a profound and highly uneven reshaping of the country — a geography of winners and losers that will, within the lifetimes of children now in primary school, begin to look very different from the map of desirable postcodes we have inherited.
The South and East: a slow emergency
Begin where the damage will be greatest.
The broad arc of England running from The Wash down through East Anglia, across the Thames Estuary and into the flatlands of Kent and Essex sits at the epicentre of the UK's most severe climate vulnerabilities. The problem here is threefold: the land is low, the sea is rising, and the ground itself is sinking.
East Anglia faces a particular predicament. From the Thames estuary to the Humber, the land has been slowly sinking for millennia. Scientists predict it will sink by a further five centimetres this century, while sea levels rise simultaneously. It is a compound threat whose full implications are still not fully absorbed by the hundreds of thousands of people who live there.
The Fens — that extraordinary, ancient landscape of flat black farmland stretching across Cambridgeshire, Lincolnshire and Norfolk, reclaimed from the sea over centuries of engineering — may in the end prove unrecoverable. A groundbreaking risk assessment by the Tyndall Centre for Climate Change Research at the University of East Anglia found that without aggressive emissions reductions, a 4°C rise by 2100 would see a profound increase in the severity and frequency of flood events, large-scale ecosystem collapse, and parts of the Fens rendered uninhabitable. The breadbasket of England, in other words, becomes the bathtub.
Without major sea defences, the sea could reach to the outskirts of Cambridge and Peterborough, flood much of East Norfolk, and drown large areas of coastal land in Suffolk and Essex. Villages that have stood since the Domesday Book face the same fate as Dunwich — that medieval Suffolk city of which scarcely a stone remains above the waterline.
The irony is acute. Better coastal defences in Norfolk may create greater problems in Suffolk, and better defences in East Anglia could threaten the Thames estuary and London. Saving one part of the coast may doom another.
London, for all its wealth and engineering ingenuity, is not exempt. Up to 1.42 million people, £321 billion worth of residential property, 496 education facilities, 711 healthcare facilities and four world heritage sites currently lie within or near the tidal flood plain in London, Kent and Essex. The Thames Barrier, completed in 1982, was designed for a world that no longer exists. As sea levels rise, the Barrier will need to close more and more often, and the government's own Thames Estuary 2100 plan acknowledges that tidal defences downstream will stop providing adequate protection by 2070, requiring upgrades of 30 to 60 centimetres in some locations.
The south-east faces a further reckoning beyond flooding. The risks associated with high temperature extremes will increase the most in warmer southern and eastern England. Without adaptation, the summers that London now considers exceptional — the 40°C days of 2022, the wildfires on Dartmoor — will become the baseline. By 2050, heatwaves like that seen in 2018 are expected to happen every other year. The urban heat island effect will make cities measurably hotter than the surrounding countryside, creating lethal conditions for the old, the very young and anyone without air conditioning.
Jamie Lewis, founder, The Affinity Group in Essex told Mortgage Introducer that climate risk is occasionally mentioned by clients but generally “comes and goes as quickly as it is raised.” However, he warned that it may well become a bigger issue in the future.
“I have no doubt that in some areas this is more important where coastal erosion has very serious implications and should be thought through either by way of lobbying local council or indeed government to improve defences. Obviously, there have been some notable losses of homes to the erosion of our coastline.
“The defences in and around Southend on Sea are good but with rising sea levels globally this is something that will need to be monitored long term. In terms of our client base, we don’t particularly encounter many problems yet, but that isn’t to say we won’t in the future.”
Hover or tap a city for details. Flood-plain shading is illustrative, not survey-accurate.
Source: city positions from real lat/lon; map topology from Natural Earth via D3. Risk classifications based on Fathom, Tyndall Centre and Climate Change Committee research.
Wales and the South West: beauty at a price
The coastlines that attract tourists and retirees in roughly equal measure — the Pembrokeshire cliffs, the Cornish coves, the Devon estuaries — will face an accelerating programme of erosion and inundation.
By 2050, it is predicted that around a third of England's coast will be affected by rising seas and erosion, leading to almost 200,000 homes needing to be abandoned. The most affected regions will be the South West, North West and East Anglia.
Cardiff sits at particular risk. Flood-modelling research from Bristol-based company Fathom found that 17.1% of properties in Cardiff will be at risk of flooding by mid-century, an increase from 15.1% in 2020 — making it the local authority with the greatest projected flood risk in the UK. The city's position at the confluence of the Taff and Ely rivers, with Cardiff Bay beyond, makes it acutely vulnerable to the combination of river flooding and rising tidal surges.
Livestock farming in the South West faces its own pressures. Dairy cattle heat stress is projected to increase by nearly 1,000% in South West England, the region with the most dairy cattle. The area of greatest risk, now and in the future, is South West England, with notable increases also across Northern Ireland, Wales and the Midlands. The West Country dairy industry — already under severe economic pressure — may be among the casualties of a warmer Britain.
Inland flooding will worsen across Wales and the north and west of England as warming intensifies. River flood risk increases particularly in the north and west — a counterintuitive finding for those who assume the wetter parts of Britain are already adapted to water. More rain falling more intensely on ground that has been baked harder by longer summers is a formula for rivers overwhelmed by flash floods, not the gradual winter rises to which these communities have historically been accustomed.
Luke Egan, director of bridging and development at Truffle Specialist Finance in Cardiff said the future impact of climate risk on the housing market should be “food for thought” for all brokers.
“Any risk naturally needs to be reviewed whether its due to flooding or any other potential hazard so this would have to form part of your choice,” he said.
“These are the things that will influence decisions when deciding whether to move or to buy that property over another, in an ideal world you wouldn’t want these risks on the property you really like but as long as they can be planned for an effectively mitigated with insurance and/or appropriate indemnity policies then this provides a solution.”
The Midlands: under the radar, under threat
The Midlands rarely features in discussions of climate risk, which is partly why its vulnerabilities are less understood. Windsor and Maidenhead — an unlikely candidate for crisis — appears among the top ten flood-risk local authorities by 2050. Warrington, which sits in the flat plain of the Mersey, faces comparable pressures.
The combination of ageing urban infrastructure, high levels of impermeable concrete and tarmac, and rivers that are increasingly running at capacity makes cities such as Nottingham, Derby and Sheffield vulnerable to the kind of surface water flooding that overwhelmed them during the events of 2007 and 2019, and which will grow more frequent.
Currently 6.3 million properties in England are in areas at risk of flooding from rivers, the sea, and surface water, a figure that could rise to around eight million — representing 25% of all properties — by 2050.
The North: A complicated future
Northern England presents the most complex picture of all, and in certain respects a more optimistic one than the south — though with significant caveats.
The structural advantage of the north is elevation. Higher ground does not flood. The Lake District, the Yorkshire Dales, the Peak District and the Pennines offer a kind of geographical insurance against rising seas that no amount of money can buy in the flatlands of Norfolk or the Thames Estuary. Cities such as Leeds, Manchester and Sheffield sit at sufficient altitude to remain above the worst tidal threats, even if their river systems will face increasing pressure.
There is also the counterintuitive upside of longer growing seasons. The growing season would be between 40 and 80 days longer by the 2080s — an increase of 4 to 8 days per decade — with the rate of change slightly greater in northern England and Scotland than elsewhere. Farmers in Yorkshire and Lancashire who can successfully adapt their crops will find themselves operating in a more productive climate than their predecessors managed.
Yet the north faces its own challenges. River flood risk increases particularly in the north and west, with heavy rainfall running off upland hills into populated valleys. The flooding that devastated Cockermouth, Carlisle and communities across Yorkshire in successive years was a preview, not an anomaly.
Katherine Stagg, director of Stagg Mortgages in Sheffield said the biggest shift is happening with lenders. “Lenders are using more granular flood‑risk data, being more cautious in high-risk postcodes, and paying closer attention to insurance availability because it affects affordability. We’re seeing more valuation queries where surveyors flag flood exposure or subsidence risk.”
She added: “Climate risk has moved from a theoretical conversation to a practical consideration that can slow or stall a transaction, but it’s not yet driving mass relocation or major changes in buyer behaviour.”
Scotland: The unlikely sanctuary
Here is where the findings become genuinely surprising — and where the science suggests that the property market may, in time, have to update its assumptions.
Scotland's climate will change profoundly. But on the most important metrics — sea level at inland elevations, temperatures that remain below the lethal range for humans, water availability — much of Scotland occupies a position of relative advantage.
Scottish agriculture may experience some positive change as summers become warmer and drier, with higher yields and the possibility of new crops. The growing of oats and barley will be supplemented, over time, by crops that currently require the warmth of southern England. The Borders and lowland Perthshire may become productive in ways their current residents cannot imagine.
READ MORE: Scottish ‘mansion tax’ raises stakes for £1m-plus homeowners
The Highlands and Islands — cold, remote and until recently something of an agricultural afterthought — offer perhaps the most robust long-term climate security of anywhere in Britain. Altitude protects against flooding. The surrounding sea moderates temperature extremes. Freshwater, fed by higher rainfall and mountain reservoirs, remains abundant even as the south and east face projected supply deficits.
Temperature warming has been greater across England and Wales than Scotland and Northern Ireland, a divergence that is expected to continue. While London bakes, and the Norfolk coast crumbles, much of Scotland remains — by relative global standards — temperate, wet and habitable.
There are, of course, qualifications. Rising sea levels, coastal erosion and changing storm patterns could see 1.2 million people across the UK exposed to devastating floods by 2050 if it follows a high carbon pathway — and Scotland's own low-lying coastlines, particularly in Fife, the Forth estuary and parts of Aberdeenshire, are not immune. The expansion of tick populations bringing Lyme disease, and warmer conditions introducing livestock diseases that were previously confined to the continent, add complexity. But in the taxonomy of UK climate risk, Scotland occupies the better end of the spectrum.
However, that does mean it’s not part of the conversation in 2026. Carolyn Dunion, of McKendry Dunion, in Edinburgh, is alerting clients to climate considerations.
She said: “Just recently, we had a client considering a beautiful property with a garden that ended on the banks of a loch. The concern is not now but whether insurance might be an issue in the future. The clients looked up SEPA [Scottish Environment Protection Agency] to discover that the property was on a flood plain and decided against the property.
“We haven’t seen lenders with concerns, so far, but longer term availability of insurance does worry me.”
The one genuine beneficiary: English wine country
There is, in this story, one clear and unambiguous winner — though its advocates are careful not to celebrate too loudly.
The counties of Sussex, Kent and Hampshire have spent the past decade undergoing a vinous transformation. The chalk downs of the South Downs, geologically identical to the soils of Champagne, are now home to hundreds of vineyards producing sparkling wines that have begun to win international awards against French competition. The reason is straightforward: the one-degree Celsius increase in average global temperatures is having a dramatic effect on winemakers around the world. In just 40 years, the ideal climatic conditions that produced the Champagne that countless revelers have sipped to ring in the New Year have shifted 200 miles northwest — to southern England.
Nearly 900 vineyards and close to 200 wineries are now operating in England, with over 10,000 acres under vine, an increase of 70% over just five years. The great Champagne houses of France have begun buying land in Sussex. It is a striking data point: as the world warms, English viticulture moves from hobby to serious industry.
"We're one of the very few winners in a world full of losers," said Greg Dunn, who leads the wine department at Plumpton College in East Sussex — though he was at pains to add that none of the winemakers took any pleasure in global warming, which is devastating ecosystems, economies and communities across the world.
It is a qualification that applies equally to everything in this analysis. The relative resilience of the Scottish Highlands, or the agricultural opportunities of a warmer north, are not to be mistaken for good news. They are the least-bad outcomes of a process that, in its unmanaged form, represents a genuine threat to the physical fabric of the country we inhabit.
A New Map of Britain
The conclusions of the science, taken together, suggest a country whose geography of desirability is being slowly but irreversibly rewritten.
The old premium attached to southern England — its sunshine, its proximity to London, its established property values — will increasingly need to be weighed against the new costs imposed by climate: uninsurable flood risk, unliveable heat, crumbling coastlines, water rationing. The UK stands to lose around 1.5% of GDP by 2050, rising to almost 4% by 2100, without significant action.
The north and Scotland — historically at a discount to London and the south-east — carry none of these burdens in the same measure. Elevation, rainfall, cooler temperatures and distance from a rising sea will, over the coming decades, begin to look less like disadvantages and more like forms of security that no amount of investment can replicate.
The estate agents have not yet priced this in. They will.
UK mean summer (June–August) temperature, 1884–2024 · Source: Met Office HadUK-Grid
