Dark Matter LabsDark Matter Labs Food as Infrastructure The Overdue Bill xCO portfolio
Draft, not for general circulation. Shared by direct link only. Not linked from site navigation or search. The figures in sections 01 to 05 come from named public sources. Section 06 is our own illustrative model, not a verified forecast; see "Show the working".
Food as Infrastructure, discovery series
Ref. UK/FOOD/001, draft
Billed to HM Treasury, on behalf of the UK taxpayer
Billing period Every year we don't fix it — this one included

The Overdue Bill

The UK doesn't have a food policy bill before Parliament. It has an invoice — for a food system that can't feed its own children well, can't pay its own farmers, and can't weather its own shocks. Nobody's signed for it. It's still due.

Total due, this year alone
Food-attributable chronic disease — healthcare, social care, welfare and lost output
£298bn
Past due, every year, compounding

That's £104bn in direct health, care and welfare costs, plus £194bn in lost productivity and quality of life — equivalent to roughly £3,590 a year added to the average household's bill before any of the knock-on costs are counted.


01What it does to children

NHS & DfE data

A child's obesity risk more than doubles between Reception and Year 6

10.5% of children are living with obesity when they start primary school. By the time they leave it, six years later, that's 22.2% — more than double, on the government's own measurement programme.

NHS/OHID, National Child Measurement Programme, 2024/25
10.5% → 22.2%

The poorer the area, the wider the gap — and it's widening

Obesity by Year 6 runs at 29.3% in the most deprived areas against 13.5% in the least deprived — more than double, and the gap has grown every year the programme has measured it.

NHS/OHID, NCMP, 2024/25
29.3% vs 13.5%

On current trends, most of today's children will be overweight or obese adults

More than 80% of children born in 2022 who survive to 65 are projected to be overweight or obese, if nothing about the food environment they grow up in changes.

The Food Foundation, The Broken Plate 2026
80%+

School dinners are funded below their own true cost

Government funds universal infant free school meals at £2.61 a head for 2025/26. An independent costing puts what a nutritious meal actually costs to make at £3.16. The gap gets made up in the food, not the invoice.

DfE UIFSM grant conditions 2025/26; School Food Matters
£2.61 funded, vs £3.16 real cost

02What it costs in health, prices and pay

NHS, social care, households, food workers

Obesity and excess weight alone, every single year

£71.4bn in healthy years of life lost, £30.8bn in lost productivity, £12.6bn in direct NHS treatment, £11.7bn in social care. Not a one-off — the annual run rate.

Nesta / Frontier Economics, July 2025
£126bn/yr

Healthy food costs more than twice as much, per calorie, as unhealthy food

The lowest-income fifth of households would need to spend 85% of their income to afford the government's own recommended healthy diet. It isn't a willpower problem. It's a pricing one.

The Food Foundation, The Broken Plate
85% of income

The people growing and serving the food are the worst paid in the economy

22% of food system workers earn the National Minimum Wage or below, against 8% across the wider economy. The system runs a wage deficit at both ends — the field and the till.

The Food Foundation, The Broken Plate
22% vs 8%

03What it costs to grow it here

Defra, farm income

Farm incomes are falling again, having only just recovered

Farm Business Income is forecast down across cereals, general cropping and mixed farms for 2025/26 — reversing most of the gains made the year before. Lower cereal prices, volatile yields, and a shrinking delinked payment are named causes.

Defra, Farm Business Income forecasts, 2025/26
Falling again

Fresh vegetable self-sufficiency is the lowest it's ever been recorded

53% of the fresh vegetables eaten in the UK are grown here — the lowest figure since records began in 1988. The rest is a supply chain nobody in this country controls.

Defra, Agriculture in the UK 2025
53%

One year of input-price shock cost UK farms an extra £1.1 billion in fertiliser alone

Fertiliser costs for UK farms rose from £1.4bn to £2.5bn in a single year, 2021 to 2022, up 78%. Fertiliser prices roughly doubled. It was the opening act of the food inflation spike that followed.

Defra, Agriculture in the UK 2022
+£1.1bn

Farmers keep less than 1p in every £1 of profit on the food they grow

A cereal farmer spends 9.03p growing the wheat for a standard loaf that sells for £1.14, and keeps 0.09p of profit from it. Dairy farmers fare little better, taking home around 2% of the profit retailers make on a block of cheddar.

Sustain, Unpicking Food Prices, Jan 2023
Under 1% of profit

Half of British farmers are weighing whether to give up altogether

51% of farmers surveyed are considering leaving the industry, and 95% expect family farms to decline over the next decade if nothing changes. 61% say the work is actively harming their wellbeing.

NFU / McCain, UK Farmdex report, 2025
51% considering leaving

On the one measure closest to fairness, the UK ranks near the bottom

On efficient agrifood supply chains, the same index that places the UK 3rd overall for food system resilience ranks it 50th of 60 for getting food to consumers through fair, functioning markets while paying farmers fairly for what they produce. Farmers carry the production risk and too often see the least reward, while value is extracted elsewhere in the chain.

Economist Impact, Resilient Food Systems Index, efficient agrifood supply chains (2.6)
50th of 60

04What it costs when it breaks

Resilience & exposure

Food inflation hit its highest rate since 1977

19.2% at its March 2023 peak — the price the UK paid for depending so heavily on imported energy, fertiliser and grain the moment global supply was disrupted.

ONS / Food Foundation, Food Prices Tracker
19.2%

Prices never really came back down

UK food prices rose 38.6% in the five years to November 2025, against just 4.6% in the five years before that. Almost all of that increase happened in one 18-month window and simply stayed.

House of Commons Library, the impact of food inflation on the cost of living
38.6% in 5 years

"Analysis of more than thirty years of UK food price data points to a clear structural pattern: food prices rise rapidly during shocks but reverse only slowly and partially afterwards. In other words, food prices shoot up like rockets but drift down like feathers."

Energy & Climate Intelligence Unit, 2026
1%unwound after 6 months
5%unwound after 1 year
7%unwound after 2 years
+50%on track by Nov 2026, against mid-2021

Self-sufficiency is falling, not holding steady

By value, the UK produced 60% of the food it consumed in 2025, down from 65% the year before. On an actual-consumption basis it's closer to 54%. The trade gap that fills the difference has widened to £42.1bn.

Defra, Agriculture in the UK 2025
65% → 60%

Four retailers still hold roughly two-thirds of the market that decides what farmers are offered

Tesco, Sainsbury's, Asda and Morrisons hold around 60–65% of UK grocery retail between them. Discounters are gaining ground — but the buying power that sets the price a farm is offered is still concentrated in a handful of hands.

Grocery market share reporting, 2025–26
~60–65%

05What it costs beyond our borders

Global interdependence and contagion

None of this happens in isolation. The UK's food system is one node in a small, tightly wired global network, which is exactly what makes it fragile.

Just 15 countries grow 70% of the world's food, and most of them export it too

11 of those 15 producer nations are also among the top 15 exporters, together accounting for more than 60% of global food exports. Even so, none of them score above 80 out of 100 on global resilience. The "anchor" countries the whole system leans on average just 70.07.

Economist Impact / Cargill, Resilient Food Systems Index, Global Report
15 countries, 70%

Food system fragility doesn't stay in the food system

A joint report from the Institute and Faculty of Actuaries and Anglia Ruskin University warns that nature loss, climate shocks and geopolitical conflict in the food system are a systemic financial risk, capable of hitting inflation, investment portfolios, public finances and social stability directly, not as a side effect.

IFoA / ARU, Planetary Solvency: Tipping into the Wild Unknown
Systemic, not isolated

More than half the global economy leans on an ecosystem it isn't paying for

55% of global GDP, $58tn, up from $44tn in 2020, is moderately or highly dependent on nature. Over half the market value of listed companies on the world's major stock exchanges carries the same exposure, largely hidden in their supply chains.

PwC, nature risk analysis
55% of global GDP

A single, declining species group underwrites hundreds of billions in food production

Between $235bn and $577bn of global food production every year depends directly on pollinators, a category of dependency that has grown 300% in 50 years even as the crops relying on it show less stable yields than crops that don't.

University of Cambridge, global pollinator risk index
Up to $577bn/yr

06Modelling the alternative

Illustrative, methodology shown

The hypothesis: fix what schools serve — nutrient-dense, organic food, properly funded — and fewer children leave primary school living with obesity. Because childhood obesity strongly predicts adult obesity, that reduction doesn't stop at Year 6: it compounds through the rest of their lives.

This is our own model, built transparently from public data — not a peer-reviewed forecast. Move the slider to see how the result changes with the assumption. The methodology is shown in full below the chart.

Assumed effect of school food reform on Year 6 obesity −20%
No effectSmall, evidencedIPPR's "halved" scenario
Horizon
NHS cost avoided, school years only, 20 years
£127m
Our calculation — see methodology
Children spared obesity, once fully phased in
52,400
Standing reduction in England's primary schools each year, from year 7 onward
Current path, unchanged school food
With school food reform
Show the working

England has roughly 4.5m primary pupils across 7 year groups — about 640,000 children per year group. NCMP puts obesity at 10.5% in Reception and 22.2% in Year 6; we model that rise as roughly linear across the seven years. The slider reduces how much obesity rises over primary school, not the Reception starting point.

Reform doesn't help existing Year 6 pupils overnight — it only benefits children who experience it for more of their time in school, so the effect phases in over the first 7 years as one new cohort starts in a reformed Reception each year, until every year group has known nothing else.

The NHS cost of a child with a weight issue is set at £136/year — the Oxford study's own aggregate (£340m a year across 2.5m children). That's the only cost figure this calculation uses; it deliberately doesn't touch the £126bn or £298bn figures above, which are economy-wide, all-ages numbers built on a different basis.

  • This is a childhood-years figure only — it stops counting the day a child leaves Year 6.
  • It assumes the slider's effect size holds steady for every cohort, with no fade-out and no error margin.
  • It doesn't account for the cost of the reform itself — this is the saving side of the ledger only.

And that's before persistence compounds it. Around 70% of obese adolescents remain obese as adults — so the children this model spares don't just have healthier school years, a meaningful share of them avoid a lifetime of it. IPPR's own independent modelling of halving childhood obesity puts the NHS saving over that generation's lifetime at £37bn, and the combined NHS-and-economy saving at £425bn — figures this page cites, not recalculates.

What it buys when the next shock lands

COVID as the precedent

COVID is the live precedent for what a food-and-health shock actually does here. Obese patients were around twice as likely to be hospitalised with COVID-19 than patients at a healthy weight, and in the same crisis, emergency food parcels handed out by Trussell Trust food banks rose 81% in the opening weeks, 122% for children. A healthier, more food-secure population doesn't prevent the next shock. It changes how hard the shock lands.

Felix Project, London, 2019
About 6m meals
2020
21.1m meals
2021
30m meals

One London food-redistribution charity, five-fold in two years: the shape of demand under an active shock, not a projection.

Current path, next shock of similar scale

The population carrying 2× risk stays as large as today

Every child this model doesn't spare grows into an adult still carrying that doubled hospitalisation risk into whatever comes next.

30.0% of adults
With reform, same shock

A measurably smaller share enters the next shock at elevated risk

Roughly 146,800 fewer adults carrying that 2× risk, purely from this one lever, after 20 years.

29.7% of adults
Not a one-off charge

This bill renews itself, automatically, every year

Every figure above is an annual run rate, not a historic total. The £298bn doesn't get paid off — it gets re-billed next year, usually for more, because nothing upstream has changed. That's the actual cost of inaction: not one bad year, but a standing order nobody's cancelled.

Children's health
Worsening
Reception-year obesity at its highest recorded rate outside the pandemic peak
Food resilience
Worsening
Self-sufficiency falling for the second year; fresh veg at a record low
Farm economics
Volatile
Incomes recover one year, fall the next — no floor under the people growing the food

None of this is the cost of acting. It's the cost of not.

Every figure on this page is what the current food system already costs, doing nothing differently. It is not a forecast of what reform might cost — it's the bill for the status quo, sourced from government's own data and the researchers government itself commissions. The question worth putting in front of Treasury isn't "can we afford to fix this" — it's how much more of this bill they're willing to keep paying before they do.

Working draft from Dark Matter Labs, Food as Infrastructure. Not yet public.

Sources