UK Environmental and Sustainability Consulting Market Projected to Reach £4.9 Billion by 2027

The UK’s environmental and sustainability (E&S) consulting market is forecast to grow at a compound annual growth rate of 10.7% through 2027, significantly outpacing global and Western European averages. This expansion is driven by a combination of net zero legislation, mandatory climate disclosures, and massive infrastructure investment cycles in the water and energy sectors. For the consulting and advisory industry, these developments represent a £1.97 billion opportunity as regulatory complexity and public sector procurement requirements elevate the role of specialized advisors.

According to Environment Analyst’s August 2024 assessment, the UK E&S consulting sector is set to reach a value of £4.9 billion by 2027, representing a 66% increase from 2022 levels. The climate change and energy services segment is identified as the fastest-growing area with a 15.6% CAGR, fueled by the UK's commitment to cut greenhouse gas emissions by 81% by 2035 and the Department for Energy Security and Net Zero’s Clean Power 2030 Action Plan. This segment alone generated £393 million in 2022, a 65% year-on-year increase, as firms seek guidance on the UK Emissions Trading Scheme and mandatory corporate sustainability disclosures.

Water and waste management constitute the second fastest-growing segment, projected to add £582 million in market value by 2027. This growth is underpinned by the Asset Management Period 8 (AMP8) cycle, which includes a record £104 billion investment package from Ofwat, and the government’s £60 billion Storm Overflow Discharge Reduction plan. Major consultancies such as Jacobs, Mott Macdonald, and Stantec have already secured multi-million-pound contracts under these frameworks. Furthermore, the new Water Special Measures Bill and the potential reset of the water sector recommended by the Independent Water Commission are expected to drive further demand for strategic advisory services as regulators gain stronger powers to sanction polluting companies.

The environmental management, compliance, and due diligence segment is expected to approach £1 billion in value by 2027, growing at an 11.9% CAGR. The Procurement Act 2023 is a key driver here, as it requires public authorities to weigh social value and environmental sustainability alongside cost, shifting consultants from simple compliance advisors to strategic partners who help suppliers reshape bids. Additionally, the UK’s development of Sustainability Reporting Standards (SRS), built on the International Sustainability Standards Board frameworks, is poised to trigger a sharp rise in demand for ESG alignment advisory once the Financial Conduct Authority confirms the scope of entities affected.

Sustainability and ESG strategy services are expected to contribute £322 million to the market through 2027, as the UK continues to embed these requirements across policy despite global rollbacks in some other regions. Ecology and biodiversity services are also poised for growth, potentially adding £235 million over the same period. A major driver for this niche is the Biodiversity Net Gain (BNG) mandate, which recently came into full force and requires developers to ensure projects result in a measurable improvement to local ecosystems, creating a premium for consultants who can bridge technical, regulatory, and financial gaps.