Regulatory framework and policies for brownfield redevelopment

This chapter provides a critical and integrated examination of the regulatory and policy framework governing brownfield redevelopment in the United Kingdom. It traces the evolution of the legislative system from the foundational contaminated land regime established by Part IIA of the Environmental Protection Act 1990 through to contemporary reforms under the Environment Act 2021 and the Levelling-up and Regeneration Act 2023, analysing how successive instruments have shaped the transition from prescriptive standards to a risk-based, “suitable for use” approach. The chapter evaluates the National Planning Policy Framework as the primary operational mechanism translating national objectives into local practice, and critically examines the institutional architecture of regulatory bodies including Local Planning Authorities, the Environment Agency, Natural England, and the Health and Safety Executive identifying how disparities in capacity and inter-agency coordination affect implementation. It also assesses the practical effectiveness of Brownfield Land Registers and Permission in Principle as market transparency tools, and reviews financial incentive mechanisms designed to address viability constraints. Emerging regulatory challenges including mandatory biodiversity net gain, PFAS contamination, declining institutional capacity, and the potential of digital decision support systems are examined in relation to future policy direction. Throughout, the chapter argues that successful brownfield redevelopment depends on the coherent alignment of regulatory, technical, and economic factors rather than on any single legislative or financial instrument.