High Speed 2 Line: Environmental Impact Assessment
The question
To ask the Secretary of State for Transport, pursuant to the Answer of 17 December 2025 to Question 96800, what the cost was of each of the following HS2 environmental assessments published since 4 July 2024: a) the Environmental Sustainability Progress Report, b) Supplementary Environmental Information reports, c) Noise and Vibration reports, and d) Air Quality reports.
Answered by Keir Mather
HS2 Ltd and its supply chain undertake routine environmental assessments throughout design and construction to confirm compliance with the High Speed Rail (London – West Midlands) Act, the HS2 Environmental Minimum Requirements, and other commitments and obligations, including those set out in existing UK environmental legislation.
Environmental assessments are a constituent part of the design and construction process, and may relate to individual assets, sectors or the whole route and can relate to a variety of environmental factors such as noise, vibration, dust or biodiversity. In view of this, neither the Department for Transport, nor HS2 Ltd, collect information related to the cost of each individual environmental assessment undertaken on the route. Such assessments inform the content of the reports referenced in the question, and it is therefore not possible to disaggregate the cost of each individual report.
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