Committees

Nitrogen

Inquiry

This inquiry will consider the efficient use and management of reactive nitrogen. It will seek to understand how excess reactive nitrogen could be captured and re-used and potential solutions for reducing nitrogen pollution. It will consider the coordination of Government policy on nitrogen across departments and how the Government could take a more holistic and strategic approach.

The report Nitrogen: time to reduce, recycle, reuse was published on 24 July 2025. The Government Response was published on 9 October 2025 and the report was debated on 6 January 2026

 

This inquiry is no longer accepting evidence

The deadline for submissions was 11:59pm on 7 March 2025.

Reports, special reports and government responses

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2nd Report - Nitrogen: time to reduce, recycle, reuse
Inquiry Nitrogen
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HL 161
Report
Response to this report
Government Response to the Environment and Climate Change Committee report 'Nitrogen: time to reduce, recycle, reuse'
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Government Response

Correspondence

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Letter from Parliamentary Under-Secretary of State on Indoor Air Quality 25.10.25
Inquiry Nitrogen
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Correspondence
Letter from Baroness Sheehan to Defra Parliamentary Under-Secretary of State on Indoor Air Quality 10.09.2025
Inquiry Nitrogen
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Correspondence
Letter from Defra Minister for Water and Flooding to Baroness Sheehan on Indoor Air Quality 01.09.2025
Inquiry Nitrogen
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Correspondence

Oral evidence transcripts

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22 May 2025
Inquiry Nitrogen
Witnesses Emma Hardy (Parliamentary Under-Secretary of State (Minister for Water and Flooding) at Defra), Daniel Zeichner (Minister of State at Defra), Emma Donnelly (Deputy Director for Clean Waters at Defra), Dr Bill Parish (Deputy Director for Air Quality and Industrial Emissions at Defra), and Claire Northridge (Deputy Director for Services and Regulation Policy at Defra)
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Oral Evidence
7 May 2025
Inquiry Nitrogen
Witnesses Helen Wakeham (Director for Water at Environment Agency), Chris Walters (Senior Director for the Price Review at Ofwat), Paul Hickey (Managing Director of RAPID at Ofwat), and Nicola Riley (Deputy Director for Agriculture & Land at Environment Agency)
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Oral Evidence
23 April 2025
Inquiry Nitrogen
Witnesses Elle Winning (Air Quality Lead at The West Midlands Combined Authority), Mike Garrity (Corporate Director for Planning, Place at Dorset Council), and Tom Parkes (Air Quality Programme Manager at London Borough of Camden)
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Oral Evidence

Written evidence

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Dame Glenys Stacey (Chair at Office for Environmental Protection) (NIT0064)
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Helen Wakeham (Director for Water at Environment Agency) (NIT0063)
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Department of Environment, Food and Rural Affairs (NIT0062)
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Other publications

Government Responses
The Government has undertaken to respond to most committee reports within two months, although there are exceptions to this rule.
1 published
Declarations of interest
Members of the House of Lords must declare relevant interests in committee work.
1 published

Contact us

  • Email: hlenviroclimate@parliament.uk
  • Phone: 020 7219 6076 (committee staff) | 0207 219 8550 (Press Officer)
  • Address: Environment and Climate Change Committee, House of Lords, London SW1A 0PW