UK Government Publishes Watchlist Naming Nearly 30 Illegal Waste 'Super Sites'

On 22 May 2026, the Environment Agency published a national watchlist of illegal waste sites for the first time in its history. The list names 117 "high priority" sites across England, including 28 so-called "super sites" — each holding more than 20,000 tonnes of waste [1]. The largest is a 281,000-tonne mound of contaminated soil in Northwich, Cheshire [2]. Combined, the listed sites hold an estimated 1.7 million tonnes of construction rubble, household waste, asbestos, shredded mixed materials, tyres, and hazardous soil [1].

The watchlist is a centrepiece of the government's Waste Crime Action Plan, published in March 2026, which frames waste crime as a serious and organised threat costing the English economy approximately £1 billion per year [3]. But for communities living alongside these sites — and for the peers, campaigners, and waste industry figures who have spent years demanding action — a central question remains: does naming the problem amount to solving it?

The Scale of Illegal Dumping

The Environment Agency estimates there are roughly 700 known illegal waste sites across England, but the watchlist focuses on the 117 deemed most harmful to communities [4]. The 28 super sites represent the worst of the worst.

Source: Environment Agency Watchlist

Data as of May 22, 2026CSV

The Northwich site alone accounts for more than 16% of all waste on the watchlist. In Worcestershire, a site near Pershore holds between 150,000 and 180,000 tonnes of mixed shredded waste. A third site at Iken in Suffolk contains 121,000 tonnes of construction and demolition debris [1]. Tips in Wigan and Sheffield, together holding nearly 40,000 tonnes, have been earmarked for potential clearance using public funds [2].

The waste categories span the full spectrum of risk. Construction and demolition rubble dominates in volume, but the watchlist also identifies sites containing asbestos, contaminated soil, hazardous trommel fines (material left over after mechanical sorting), household waste, commercial waste, and baled refuse [1]. Several sites function as active tips operating without correct permits, while others are stockpiles dumped on private countryside land.

The Environment Agency has stated it "cannot prejudice ongoing enquiries" by disclosing further site-specific details, with more granular information expected in summer 2026 [1].

A Billion-Pound Problem

Waste crime's financial toll reaches across multiple public budgets. The government's own Waste Crime Action Plan estimates the total economic cost at £1 billion annually [3]. Landfill tax evasion alone — where operators pocket the £126-per-tonne tax by diverting waste to illegal dumps — accounted for an estimated £150 million in lost revenue in 2023–24 [3].

Source: Defra / Waste Crime Action Plan

Data as of Mar 23, 2026CSV

Local authorities spent £19.3 million clearing fly-tipping incidents in the year to March 2025 [5]. But the costs escalate sharply at super-site scale. The only site the Environment Agency has committed to fully clearing — Hoad's Wood in Kent — carries a £15 million price tag, of which £4 million is landfill tax that the agency must pay to the Treasury [6]. Liberal Democrat peer Lord Russell, who pushed for the Hoad's Wood cleanup, called that arrangement "ludicrous" [6].

That landfill tax obligation on publicly funded clearances acts as a structural disincentive. The Environment Agency has acknowledged it "generally lacks funding to clear the other sites on the watchlist and only intervenes in exceptional circumstances" [2]. Remediation costs for large-scale hazardous sites can exceed £100 million [3], yet the permit guarantees and financial bonds held against individual operators are typically a fraction of such sums. The result: when an operator walks away, the gap between the bond and the cleanup bill falls on the taxpayer or the landowner.

The overall cleanup burden on private landowners, farmers, and councils from illegal dumping is estimated at £392 million per year [7].

Organised Crime and the Permit Loophole

The government's own language has shifted. The Waste Crime Action Plan characterises illegal waste activity as part of serious and organised crime, linking it to networks involved in drugs, firearms, money laundering, and modern slavery [3]. The Joint Unit for Waste Crime (JUWC), a multi-agency taskforce comprising the Environment Agency, police forces, the National Crime Agency, HMRC, and the National Fire Chiefs Council, had made 186 arrests by September 2025 [8].

Yet specific ownership details of the named super sites remain largely undisclosed. The watchlist does not publicly identify operators, directors, or connected parties. Environmental lawyers and campaigners have long argued that waste criminals exploit the ease of registering as waste carriers and the limited cross-referencing between Environment Agency permit records, Companies House filings, and criminal records databases [9].

Approximately 20% of all waste managed in England is estimated to be handled illegally, but only 27% of waste crimes are reported [3]. The gap between the scale of the activity and the visibility of the actors behind it remains wide.

Criminals can profit approximately £2,500 per articulated lorry of waste diverted to an illegal dump, by collecting disposal fees from customers and pocketing the landfill tax [6]. The low risk of detection and the high profit margins have made waste crime an attractive enterprise for organised groups.

Enforcement: A Decade of Decline

The watchlist arrives against a backdrop of enforcement that collapsed over the past decade before a recent partial recovery.

Source: Byline Times / House of Lords Library

Data as of May 22, 2026CSV

In 2012, the Environment Agency brought close to 300 prosecutions. By 2021, that number had fallen to fewer than 20 — a 94% drop [10]. The agency's overall investigations fell 30% between 2015 and 2020 [10]. The decline tracked directly with austerity-era funding cuts: staff numbers fell from 11,400 to 9,700 as Defra's grant-in-aid to the agency was reduced, with the Environment and Business division losing 34% of its budget [11].

More recently, the trajectory has reversed. Between July 2024 and the end of 2025, the agency secured 122 prosecutions, 10 immediate custodial sentences, and stopped illegal activity at 1,205 sites [3]. In the three years to March 2025, the agency achieved 211 prosecutions, £640,000 in fines, and 20 custodial sentences [8]. But the absolute numbers remain modest relative to the scale of the problem: during that same three-year period, the agency received over 24,000 reports of waste crime and opened only 320 criminal investigations [12].

The enforcement budget has increased by more than 50%, now standing at £15.6 million, and the government has committed £45 million in additional funding over three years [3]. The JUWC has been expanded from 13 to 20 specialists, and 43 additional front-line criminal enforcement staff have been recruited [13]. A 33-strong drone squad equipped with LiDAR now conducts aerial surveys of suspected sites [13].

Whether these resources are sufficient remains contested. The Environmental Services Association, which represents the legitimate waste sector, has warned against funding levels that cannot match the scale of criminal activity [11].

Parliamentary Criticism: "Multiple Failures" and "Incompetence"

The most sustained criticism has come from the House of Lords Environment and Climate Change Committee, which conducted an inquiry into waste crime in 2025. In an October 2025 letter to the Secretary of State, peers warned that "waste crime is critically under-prioritised despite its significant environmental, economic and social costs" [12].

The committee cited "multiple failures" by the Environment Agency, the "ineffectiveness" of the Joint Unit for Waste Crime, and "a lack of interest shown" by police forces [12]. Members of the committee said it was "difficult to rule out incompetence" as a factor [12].

The committee called for an independent root-and-branch review of waste crime enforcement. The government rejected that recommendation, arguing it would divert resources from planned reforms [14]. The committee subsequently described the government's response as "complacent" and summoned the Defra Secretary to appear before it [15].

Baroness Parminter, who chaired aspects of the inquiry, highlighted that waste crime enforcement had been treated as a low priority across multiple agencies for years — and that the watchlist, while welcome in principle, risked becoming a catalogue of known problems rather than a tool for change [12].

Health and Environmental Impact

For communities near super sites, the consequences are immediate and measurable. Illegal waste sites in Essex and elsewhere regularly catch fire, degrading local air quality [16]. When oil-based wastes, plastics, and treated wood burn, they release carcinogenic compounds including black carbon, dioxins, and particulate matter [16].

Groundwater contamination is a further concern. Without the monitoring infrastructure required at permitted landfills, hazardous materials including chemicals, asbestos, and oils can leach into soil and water supplies [17]. The Environment Agency's own rationale for the watchlist acknowledges that sites are designated as high priority because they cause "concerns within local communities" [4].

Geoff Howarth, who runs a business adjacent to the Sheffield super site, offered a blunt assessment of the watchlist's practical impact: "The new watchlist gave me no more faith whatsoever that greater action would be taken" [2].

However, systematic NHS data linking respiratory or toxicological presentations to proximity to specific illegal waste sites is not publicly available. The absence of this data is itself a gap that public health researchers and campaigners have flagged as a barrier to establishing causation and strengthening the case for enforcement spending.

Landowner Liability and the Accountability Gap

Under the "polluter pays" principle, those responsible for illegal dumping are expected to fund cleanup [4]. In practice, once a waste operator disappears — often through corporate dissolution — liability defaults to the landowner. That landowner may be a farmer who rented out a field, a local authority, or an institutional investor holding property through layers of corporate structure.

The Waste Crime Action Plan does not specifically address the exposure of pension funds, investment trusts, or other institutional landowners. Environmental lawyers have noted that some sites sit on land where ownership is fragmented — sold in small lots to multiple buyers — creating paralysis over who bears responsibility [7].

The publication of the watchlist may sharpen this question. Landowners whose property appears on the list now face potential reputational and financial consequences, even if they had no involvement in the waste activity. There is no mechanism in the current framework for the Environment Agency to compel a landowner to fund clearance, though the agency can serve notice requiring action under environmental permitting regulations [9].

The Naming-and-Shaming Debate

The watchlist marks a philosophical shift for the Environment Agency, which has historically been cautious about publishing site-specific information. The agency's stated rationale is transparency: communities should know where enforcement is active [4].

Industry groups have offered mixed responses. Some waste sector representatives argue that public naming of sites under active compliance action — as distinct from fully illegal operations — risks stigmatising legitimate businesses and depressing land values in surrounding areas [2]. The concern is that naming-and-shaming may displace waste crime to unlisted locations rather than deter it.

The government has countered that transparency is itself a deterrent. The Waste Crime Action Plan commits the agency to naming illegal operators for the first time and sharing information across the waste sector "to put waste criminals on notice" [3]. The watchlist will be updated monthly [4].

The evidence base for deterrence through transparency is thin. No controlled study of naming-and-shaming in UK waste regulation exists. The government's own action plan notes that it has commissioned research into international enforcement models but has not yet published comparative findings [3].

International Comparison

The UK's enforcement record compares poorly with some European counterparts, though direct comparison is complicated by different legal frameworks.

The Netherlands maintains a dedicated national prosecutor's office for environmental crime with approximately 100 specialised prosecutors and support staff [18]. By contrast, the Environment Agency's expanded JUWC has 20 specialists [3]. Dutch enforcement benefits from corporate criminal liability provisions that allow companies, not just individuals, to face prosecution for environmental offences [18].

Germany's Criminal Code contains specific environmental offences, and German authorities have conducted cross-border operations against organised waste trafficking networks in coordination with Europol and Eurojust [18]. The EU's updated Environmental Crime Directive, adopted in 2024, sets a framework for harmonised penalties across member states, though enforcement remains nationally administered [19].

The UK, post-Brexit, operates outside this framework. The government's decision to explore additional powers from the Police and Criminal Evidence Act and Proceeds of Crime Act for Environment Agency officers represents an attempt to close some of the gap [3]. Proposals include increasing maximum penalties for waste carrier offences to five years' imprisonment and adding driving licence penalty points for fly-tipping convictions [3].

Digital Waste Tracking: The Next Test

Perhaps the most consequential reform in the pipeline is Digital Waste Tracking, which went live on a voluntary basis in April 2026 and becomes mandatory for permitted waste sites from 1 October 2026 [20]. A second phase, covering waste carriers, brokers, and dealers, is expected from October 2027 [20].

The system aims to track waste movements in near-real time from production to final disposal, replacing the paper-based waste transfer note system that has been in place for decades [20]. If implemented effectively, it would make it significantly harder for operators to divert waste to illegal sites without detection.

The system's success will depend on compliance and enforcement. There are currently over 500,000 registered waste exemptions across more than 100,000 sites — a regulatory landscape that criminals have historically found easy to exploit [3]. The Waste Crime Action Plan proposes removing three exemption categories and tightening conditions on seven others [3].

Three Sites Under Active Assessment

The government has identified three super sites for feasibility assessments on taxpayer-funded clearance: Alan Ramsbottom Way in Hyndburn, Lancashire; Worthing Road in Sheffield; and Bolton House Road in Wigan [3]. These are in addition to the ongoing Hoad's Wood clearance in Kent.

The selection of only three sites from a list of 28 super sites underscores the resource constraint. At the Hoad's Wood rate of £15 million per site, clearing all 28 super sites would cost upwards of £420 million — before accounting for the differing scales and hazard profiles of each location. The actual figure for the Northwich site, at nearly eight times the volume of Hoad's Wood, would likely be substantially higher.

The £45 million in new funding committed over three years covers enforcement activity across all 700 known illegal sites, not site clearance. The gap between the cost of the problem and the resources allocated to solving it remains the defining tension in England's waste crime landscape.

What the Watchlist Does — and Doesn't — Change

The watchlist gives communities information they did not previously have. It creates a public record that the Environment Agency can be held to. It introduces reputational risk for operators and landowners alike.

What it does not do is fund clearance, compel remediation, or guarantee prosecution. The 28 super sites on the list did not appear overnight. Many have been known to the agency for years. The question now is whether naming them publicly accelerates their resolution or simply formalises a status quo that has persisted through a decade of under-enforcement.

The answer will depend less on the watchlist itself than on what follows: whether Digital Waste Tracking closes the data gap, whether expanded enforcement resources produce results at scale, and whether the government is willing to confront the structural problem of landfill tax on publicly funded cleanups that makes every remediation more expensive than it needs to be.