UK Environmental Law

Sources of UK Environmental Law

UK environmental law derives from statutes, secondary legislation, retained EU law (preserved by the European Union (Withdrawal) Act 2018), and the common law. The Environmental Protection Act 1990 (EPA 1990) is foundational: Part I established integrated pollution control (IPC), Part II governs waste management, and Part IIA, inserted by the Environment Act 1995, addresses contaminated land. The Environment Act 1995 created the Environment Agency for England and Natural Resources Wales, consolidating regulatory functions previously distributed among multiple bodies.

Following the UK’s withdrawal from the European Union, the Environment Act 2021 established a new domestic environmental governance framework. It created the Office for Environmental Protection (OEP) as an independent statutory body with powers to investigate government non-compliance with environmental law and to review the adequacy of environmental enforcement. The Act requires an environmental principles policy statement embedding the precautionary, prevention, rectification at source, and polluter pays principles into policy-making, and mandates long-term environmental targets for air quality, water, biodiversity, resource efficiency, and waste reduction.

Integrated Pollution Prevention and Control

The Pollution Prevention and Control Act 1999 and the Environmental Permitting Regulations 2016 establish an IPPC permit system. Operators must obtain a single permit covering emissions to air, water, and land based on best available techniques (BAT) . The Environment Agency regulates Part A (higher-risk) installations; local authorities regulate Part B installations.

Water Quality and Air Quality

The Water Resources Act 1991 prohibits pollution of controlled waters and requires discharge consents. The Water Industry Act 1991 regulates privatised water companies through Ofwat and the Drinking Water Inspectorate. The retained Water Framework Directive requires good ecological and chemical status through river basin management.

Part IV of the Environment Act 1995 establishes air quality management. The Secretary of State sets national air quality objectives for pollutants including nitrogen dioxide, particulate matter, and sulphur dioxide. Local authorities must review and assess air quality in their areas and designate air quality management areas (AQMAs) where objectives are not being met, requiring preparation of local air quality action plans. The Environment Act 2021 introduced a duty to set a PM2.5 target and a long-term air quality target.

Contaminated Land and Waste

Part IIA of EPA 1990 establishes a risk-based contaminated land regime. Liability falls on the polluter in possession (Class A) or, alternatively, the current owner (Class B). The suitable for use standard requires remediation proportionate to current or planned use, not pristine restoration.

The waste framework under EPA 1990 Part II includes the duty of care (s 34) requiring proper waste management through authorised persons. The waste hierarchy — prevention, reuse, recycling, recovery, disposal — is embedded in regulations. Producer responsibility schemes for packaging, WEEE, batteries, and end-of-life vehicles require producers to finance collection and treatment.

Climate Change Legislation

The Climate Change Act 2008 was the world’s first long-term legally binding climate framework, originally requiring an 80% reduction in emissions by 2050. In 2019, it was amended to net zero by 2050. The Act establishes carbon budgets for successive five-year periods and the Committee on Climate Change (CCC) to advise Parliament.

The UK Emissions Trading Scheme (UK ETS) replaced EU ETS participation from 2021, applying a cap-and-trade system to energy-intensive industries, power generation, and aviation. The Climate Change Levy taxes non-domestic energy use, with discounted rates through Climate Change Agreements for energy-intensive industries.

Planning, Habitats, and Environmental Liability

The Town and Country Planning Act 1990 provides the statutory framework for land-use planning, with the National Planning Policy Framework requiring contribution to sustainable development. The Environmental Impact Assessment Regulations 2017 require EIA for projects likely to have significant environmental effects, mandating an environmental statement covering effects on population, biodiversity, land, water, air, climate, and cultural heritage with public consultation. The Conservation of Habitats and Species Regulations 2017 transpose the Habitats Directive, protecting SACs, SPAs, and European protected species including all bat species, great crested newts, and otters, with mandatory appropriate assessment for likely significant effects on Natura 2000 sites. The Environment Act 2021 introduced mandatory biodiversity net gain for development, requiring at least a 10% increase in habitat value.

The Environmental Damage and Restoration Regulations 2009 impose strict liability for environmental damage — to protected species, habitats, water, and land — from listed occupational activities, requiring operators to take preventive and remedial measures. Personal injury and property damage remain governed by common law torts including nuisance, negligence, and Rylands v. Fletcher.