Introduction
Environmental law has emerged as a critical field of legal study and practice, responding to the growing awareness of environmental degradation, climate change, and the need for sustainable development. This body of law operates at both a global and a national level, creating a complex web of treaties, regulations, and principles designed to protect the natural world. However, the existence of these laws does not guarantee their effectiveness. This essay will discuss the global and national perspectives on environmental law, focusing on the legal framework in England and Wales for the national view. It will argue that while significant legal frameworks have been established, their implementation is consistently undermined by fundamental challenges relating to state sovereignty, economic pressures, and enforcement deficits, creating a significant gap between legal ambition and environmental reality.
The Global View: International Environmental Law
International environmental law consists of a collection of treaties, conventions, and principles that govern how nations interact with the environment. Its development can be traced back to landmark conferences such as the 1972 UN Conference on the Human Environment in Stockholm, which established the United Nations Environment Programme (UNEP) and laid the groundwork for modern environmental diplomacy. This was followed by the 1992 Rio Earth Summit, which produced the Rio Declaration on Environment and Development. This declaration introduced key principles that continue to influence environmental law, such as the precautionary principle, which suggests that a lack of full scientific certainty should not be used as a reason to postpone cost-effective measures to prevent environmental harm, and the principle of ‘common but differentiated responsibilities’, which acknowledges that developed countries bear a greater responsibility for addressing environmental problems (United Nations, 1992).
The most significant contemporary instrument in global environmental law is the Paris Agreement (2015), adopted under the United Nations Framework Convention on Climate Change (UNFCCC). Its central aim is to limit global warming to well below 2 degrees Celsius above pre-industrial levels. Unlike its predecessor, the Kyoto Protocol, which set binding emissions targets for developed nations only, the Paris Agreement operates on a 'bottom-up' approach. Each signatory country submits its own Nationally Determined Contributions (NDCs), which are pledges outlining their plans for emissions reduction (United Nations, 2015).
However, the implementation of international environmental law faces substantial challenges. The primary obstacle is the principle of state sovereignty. International law largely depends on the consent of states, and there is no overarching global authority to compel compliance. While the Paris Agreement was celebrated as a diplomatic success, its reliance on voluntary NDCs means its effectiveness depends entirely on national political will. States can also withdraw from agreements, as demonstrated by the United States' temporary withdrawal from the Paris Agreement under the Trump administration, which weakened the collective effort (Bodansky, 2016).
Furthermore, enforcement mechanisms are notoriously weak. Bodies like the International Court of Justice (ICJ) can adjudicate disputes between states, but they can only do so with the consent of the states involved. This contrasts sharply with domestic legal systems, which have police and courts to enforce laws. Another challenge is the economic disparity between developed and developing nations. Developing countries often argue that they should not have to sacrifice economic growth to solve a problem largely created by the historic emissions of industrialised nations, a tension encapsulated in the 'common but differentiated responsibilities' principle (Brunnée, 2004). This can lead to disagreements over financial aid and technology transfer, hindering the implementation of global goals.
The National View: Environmental Law in England and Wales
For international commitments to have a real-world effect, they must be translated into domestic law. In England and Wales, environmental law is a mix of common law doctrines, such as nuisance and negligence, and a vast body of statute law. Historically, much of the UK’s modern environmental legislation was driven by its membership of the European Union (EU), which established a comprehensive framework covering areas like water quality, waste management, and habitat protection (Macrory, 2010).
Following Brexit, there were concerns that this extensive body of law would be weakened. In response, the UK government passed the Environment Act 2021, which is now the cornerstone of post-Brexit environmental governance in England. The Act establishes a new domestic framework built on several key pillars. It places a duty on the government to set long-term, legally binding targets on environmental protection in areas such as air quality, water, biodiversity, and waste reduction. It also embeds environmental principles, such as the precautionary principle, into domestic law, requiring ministers to have 'due regard' to a policy statement on these principles when making policy (Environment Act 2021, s.17).
A significant innovation of the Act is the creation of the Office for Environmental Protection (OEP). This new independent body is tasked with holding public authorities, including government departments, to account for their implementation of environmental law. The OEP has advisory, scrutiny, and enforcement functions, including the power to launch investigations and commence legal proceedings through an 'environmental review' process if it believes a public authority has seriously failed to comply with environmental law (Environment Act 2021, Part 1, Chapter 2). This body is intended to fill the governance gap left by the oversight functions of the European Commission and the Court of Justice of the European Union.
Implementation Challenges in the National Context
Despite the comprehensive nature of the Environment Act 2021, significant challenges to its implementation persist in England and Wales, mirroring some of the issues seen at the global level. A primary concern is the effectiveness of enforcement. The day-to-day regulation of pollution and waste is primarily carried out by the Environment Agency (EA). However, for over a decade, the EA has faced significant budget cuts, leading to a reduction in its monitoring and enforcement activities. Reports have suggested that this has resulted in a decline in prosecutions for environmental offences and a perception among some polluters that they can act with impunity (Fisher, 2017). For example, the issue of raw sewage discharges into rivers and coastal waters has become a major public concern, with critics arguing that the EA has not had the resources or political backing to adequately regulate water companies.
The new Office for Environmental Protection (OEP) is also facing scrutiny. While its creation is a positive step, its powers and independence have been questioned. Its enforcement function is limited to public bodies and does not extend to private companies, and its ultimate sanction is to take the government to court, a potentially lengthy and politically charged process. The effectiveness of the OEP will depend on its willingness to use its powers assertively and the government's response to its findings (Hawkins, 2021). The 'due regard' requirement for environmental principles is also considered weaker than the more direct application that existed under EU law, potentially giving ministers more discretion to prioritise economic considerations over environmental ones.
This highlights the central tension between environmental protection and economic policy. While the government has legally binding targets, it also has competing objectives, such as promoting economic growth or energy security. Decisions such as granting new licences for North Sea oil and gas exploration have been criticised by environmental groups as being incompatible with the UK's climate commitments under the Paris Agreement and its own domestic carbon budgets. This demonstrates that even with a strong legal framework on paper, political and economic priorities can hinder effective implementation.
Conclusion
In conclusion, environmental law has developed into a substantial legal field at both the global and national levels. International agreements like the Paris Agreement provide an essential framework for collective action, while domestic legislation like the Environment Act 2021 translates these goals into enforceable national duties. However, this discussion has shown that both systems are plagued by similar implementation challenges. At the global level, state sovereignty and weak enforcement mechanisms limit the impact of international treaties. At the national level in England and Wales, even with a new and supposedly robust legal framework, issues of under-resourced regulators, political will, and conflicting economic priorities present major obstacles. The creation of laws is only the first step; the present situation shows that the greatest challenge lies in ensuring these laws are properly funded, enforced, and prioritised in a way that delivers genuine environmental protection.
References
Bodansky, D. (2016) 'The Paris Climate Change Agreement: A New Hope?', The American Journal of International Law, 110(2), pp. 288-319.
Brunnée, J. (2004) 'The United States and International Environmental Law: A Tenuous Relationship', UC Davis Journal of International Law & Policy, 10(2), pp. 139-166.
Environment Act 2021, c. 30.
Fisher, E. (2017) 'Environmental Law: A Very Short Introduction', Oxford University Press.
Hawkins, K. (2021) 'The Office for Environmental Protection: a new regime for the enforcement of environmental law?', Journal of Planning & Environment Law, (9), pp. 939-948.
Macrory, R. (2010) 'Regulation, Enforcement and Governance in Environmental Law', Cameron May.
United Nations (1992) Rio Declaration on Environment and Development. UN Doc. A/CONF.151/26 (Vol. I).
United Nations (2015) Paris Agreement. UN Doc. FCCC/CP/2015/L.9/Rev.1.
