Lets Rethink Policy-Making: Illegal Drugs – Who’s Been Getting Rich.

How We Spend More Cleaning Up Than the Market Is Worth

We’ve been talking a lot in this series about incentives, systems, and unintended consequences. So let’s try something deliberately unglamorous for a moment.

Let’s stop arguing about whether certain behaviours are right or wrong — and instead ask a much duller question:

How much is this actually costing us?

Not in slogans.
Not in press releases.
Just roughly. Back-of-a-fag-packet stuff.

Because once you start adding up the numbers, something slightly uncomfortable appears.

---

First, a small but important housekeeping note

Most of the figures below relate to England & Wales, because that’s where the most consistent public data exists. They are not mechanically scalable to the whole UK.

Scotland and Northern Ireland have, at times, experienced proportionately higher drug-related harms, different market structures, and different enforcement and health responses. Simply multiplying by population would be misleading in both directions.

What matters here isn’t the exact total — it’s the relationship between market size and public cost. And that relationship is robust.

---

The illegal drugs market: a rough sketch

Let’s start with what people actually spend.

Mainstream estimates suggest that the retail value of the illegal drugs market in England & Wales sits at roughly £9–10 billion per year.

That’s the money users hand over. Not street-value hypotheticals. Actual spending.

Now set that against the other side of the ledger.

Government-commissioned analyses consistently estimate the total social and economic cost of illegal drugs in England & Wales at around £20 billion per year.

That figure rolls together a lot of things:

• health harms and treatment
• drug-related crime
• lost productivity
• family and community impacts
• wider public-service pressures

Inside that £20bn, you’ll often see figures like:

• around £1–2bn a year on enforcement, and
• several billions associated with drug-related crime and criminal justice activity

Those aren’t add-ons — they’re components. The key point is the scale.

We are spending roughly twice the retail value of the market dealing with its consequences.

Before we’ve taxed a penny.
Before we’ve reduced demand.
Before anything has “worked”.

That alone should make us pause.

---

Why this shouldn’t surprise us

At this point, someone usually says:

“Yes, but if we just pushed harder…”

Which assumes the behaviour itself is the variable.

History suggests otherwise.

Before 1969, the UK operated a very different system for certain drugs. There were legally registered addicts, some of whom received their drugs at no cost. The numbers were small by today’s standards — but they weren’t zero.

That matters, because it tells us something important:

There has always been a baseline level of drug use that policy didn’t eliminate — it merely managed.

Since then, the market has widened. New substances have appeared. Some are recreational, some occasional, some persistent. Social conditions, hardship, opportunity, and culture all play a role.

And when we look at the population as a whole, that baseline becomes much clearer.

In England and Wales, around a third of adults report having used an illegal drug at least once in their lifetime. In any given year, around 1 in 10 adults report recent use. Yet the number of people experiencing serious or dependent drug use is much smaller — typically estimated at 2–3% of the population, depending on definition.

Which tells us something else that’s easy to forget in heated discussions:

Most people who use drugs do not become dependent.
Most do not cause serious harm.
But a smaller group does — and it’s that group where the vast majority of harm, cost, and public concern is concentrated.

So the uncomfortable truth is this:

There will always be people who want to use drugs.

Designing a system as if that baseline demand doesn’t exist — or as if it can be driven to zero by pressure alone — is how you end up spending £20bn a year chasing shadows, whilst creating a £10bn-a-year income for criminals.

---

A quick detour: tobacco as a sense-check

This logic becomes clearer if we look at something familiar.

Tobacco.

Around 55–60% of UK adults have smoked at some point in their lives. Current smoking rates are much lower now — around 12–13% — but lifetime exposure is high.

The total social cost of smoking in the UK is often estimated at around £25 billion per year, once you include health care, social care, lost productivity, and premature death. The direct NHS cost is a few billion of that.

At first glance, that looks enormous.

But it starts to make sense when you remember:

• how many people were exposed over decades
• how long smoking-related illnesses take to develop
• and how long the costs persist, even as smoking rates fall

Crucially, smoking is legal, regulated, taxed, and visible. Which means we can measure it. We can fund treatment. We can design policy around it.

Illegal drugs sit in a different place — not because the behaviour is uniquely alien, but because the system is.

---

Overlaps matter (and pretending they don’t is expensive)

One more thing we need to be honest about.

Drug users, tobacco users, and alcohol users are not three neat, separate populations. There is significant overlap.

That means:

• social costs overlap
• health costs overlap
• enforcement costs interact

And yes — when headline figures are produced separately for each category, there is likely some degree of double counting at the margins.

This doesn’t weaken the argument. It strengthens it.

Because it shows that we’re often paying multiple times to manage the same underlying vulnerabilities, using separate systems that don’t talk to each other. The costs look siloed on paper, but they land on the same people, families, and public services.

Seen that way, the problem isn’t that the numbers overlap.

It’s that our policies do.

---

The uncomfortable ratio

If we zoom back out, the picture is stark.

In England & Wales:

• People spend roughly £9–10bn a year buying illegal drugs.
• We spend roughly £20bn a year dealing with the consequences.

That’s not a rounding error.
That’s not bad luck.
That’s a structural mismatch.

It suggests we’ve built a system where:

• the market persists, and
• the costs multiply around it

Which raises a question that’s hard to un-ask once it’s on the table:

If some level of use is persistent — and we already spend more cleaning up than the market is worth — what exactly are we paying for?

That’s where things start to get interesting.

Because once you accept that baseline reality, a different set of questions opens up — not about morality, but about design.

And that’s what we’ll look at next.

In Part 2, we’ll ask what happens if you stop pretending the market will disappear — and start thinking about where the money actually flows.

---

Further reading & supporting information

This post deliberately uses rounded figures and order-of-magnitude estimates, rather than precise accounting. For those who want to look under the bonnet, the following publicly available sources inform the broad relationships described above.

Illegal drugs: market size and social cost

• UK Government / Carol Black Review of Drugs – estimates the total social and economic cost of illegal drugs in England at around £20bn per year, including health, crime, and productivity impacts.
• Home Office & academic consumption-based estimates – place the retail value of the illegal drugs market in England & Wales in the region of £9–10bn per year.
• Transform Drug Policy Foundation – collates public data on enforcement, criminal justice, and health costs, with clear breakdowns and caveats.

Enforcement and criminal justice

• Home Office drug seizure and enforcement statistics – show consistent multi-billion-pound annual expenditure across policing, courts, prisons, and probation linked to drug-related activity.
• UK Parliamentary research briefings – discuss how “drug-related” costs are distributed across departments, and why totals are often underestimated when viewed in isolation.

Historical context

• Pre-1969 UK drug policy records (Hansard) – document the number of legally registered addicts prior to the Misuse of Drugs Act, providing a useful historical baseline for persistent demand under very different policy conditions.

Tobacco as a comparator

• Action on Smoking and Health (ASH) – estimates the total social cost of smoking in England at over £20bn per year, with NHS costs in the low single-digit billions.
• Office for Budget Responsibility (OBR) – publishes annual forecasts for tobacco duty revenue (around £8bn+ per year UK-wide).
• Public health studies on tobacco taxation and illicit trade – show that high taxation reduces use but increases incentives for smuggling when supply controls are weak, illustrating the importance of aligning price and enforcement.

Alcohol and population exposure

• ONS and NHS Digital surveys – show lifetime alcohol use approaching 90% of adults, with harmful or dependent use concentrated in a much smaller minority.
• Public Health England analyses – document alcohol-related health and social costs, reinforcing the pattern that widespread use does not imply widespread harm.

On uncertainty and overlap

None of these figures should be treated as exact, and many costs overlap across substances and social groups. That overlap is part of the point: we often pay multiple times for the same underlying harms because systems are designed in silos.

The aim here is not to present a final balance sheet, but to establish a robust relationship:

that the public cost of managing illegal drug use substantially exceeds the retail value of the market itself.

That relationship holds across sources, methods, and years.

---