2nd Report - Nitrogen: time to reduce, recycle, reuse
- HC No.
- —
- Published
- 24 Jul 2025
- Items
- 0
- Response
- Response document linked Read government response ↗
Select Committee · Environment and Climate Change Committee
Nitrogen
Status: Closed
Opened: 30 Jan 2025
Closed: 6 Jan 2026
1 report
Inquiry scope
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 2026Reports
Oral evidence sessions
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| Date | Session and witnesses | Source |
|---|---|---|
| 22 May 2025 | Claire Northridge · Defra, Daniel Zeichner MP · Defra, Dr Bill Parish · Department for Environment Food and Rural Affairs, Emma Donnelly · Defra, Emma Hardy MP · Defra | View ↗ |
| 7 May 2025 | Chris Walters · Musicians’ Union, Helen Wakeham · Environment Agency, Nicola Riley · Environment Agency, Paul Hickey · Ofwat | View ↗ |
| 23 Apr 2025 | Dr Tony Juniper CBE · Natural England, Elle Winning · The West Midlands Combined Authority, Mike Garrity · Dorset Council, Rob Cameron · Natural England, Tom Parkes · London Borough of Camden | View ↗ |
| 26 Mar 2025 | Dame Glenys Stacey · Ofqual, Natalie Prosser · Office for Environmental Protection | View ↗ |
| 19 Mar 2025 | Andrew Hoare · Fortescue, Dr James Kershaw · Opportunity Green, Lord John Fuller OBE · Brineflow Ltd., Mr Pawel Kisielewski · CCm Technologies, Trevor Brown · Ammonia Energy Association, Vicky Robinson · Agriculture Industries Confederation | View ↗ |
| 12 Mar 2025 | David Johnson · The Rivers Trust, Mike Rose · UK Water Industry Research, Pär Larshans · Ragn-Sells | View ↗ |
| 5 Mar 2025 | Jerry Alford · Soil Association, John Williams · ADAS, Martin Lines · Nature Friendly Farming Network, Peter Cowlrick · CCC Agronomy, Tom Bradshaw · National Farmers' Union (NFU) | View ↗ |
| 26 Feb 2025 | Professor Alastair Lewis · National Centre for Atmospheric Science, Professor Anna Hansell · University of Leicester, Professor Catherine Bondonno · Edith Cowan University, Professor Gunter Kuhnle · University of Reading | View ↗ |
| 12 Feb 2025 | Dr Alexander Lees · Manchester Metropolitan University, Dr Ed Rowe · UK Centre for Ecology & Hydrology, Professor Jeremy Biggs · Freshwater Habitats Trust | View ↗ |
| 5 Feb 2025 | David Baldock · Institute for European Environmental Policy (IEEP UK), Dr Ulli Dragosits · UK Centre for Ecology & Hydrology, Professor Kevin Hicks · Stockholm Environment Institute at the University of York | View ↗ |
Who gave evidence
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| Witness | Organisation | Sessions |
|---|---|---|
| Andrew Hoare · Head of Marine Systems and Green Shipping | Fortescue | 1 |
| Chris Walters · National Organiser, Education and Health & Wellbeing | Musicians’ Union | 1 |
| Claire Northridge · Deputy Director for Services and Regulation Policy | Defra | 1 |
| Dame Glenys Stacey · Acting Chief Regulator | Ofqual | 1 |
| Daniel Zeichner MP · Minister of State | Defra | 1 |
| David Baldock · Honorary Fellow | Institute for European Environmental Policy (IEEP UK) | 1 |
| David Johnson · Technical Director | The Rivers Trust | 1 |
| Dr Alexander Lees · Reader in biodiversity | Manchester Metropolitan University | 1 |
| Dr Bill Parish · Head of Air Quality & Industrial Emissions | Department for Environment Food and Rural Affairs | 1 |
| Dr Ed Rowe · Senior Biogeochemical Modeller | UK Centre for Ecology & Hydrology | 1 |
| Dr James Kershaw · Scientific Officer | Opportunity Green | 1 |
| Dr Tony Juniper CBE · Chair | Natural England | 1 |
| Dr Ulli Dragosits · Group Leader for Emission Sources, Sinks and Solutions | UK Centre for Ecology & Hydrology | 1 |
| Elle Winning · Air Quality Lead | The West Midlands Combined Authority | 1 |
| Emma Donnelly · Deputy Director for Clean Waters | Defra | 1 |
| Emma Hardy MP · Minister for Water and Flooding | Defra | 1 |
| Helen Wakeham · Director of Water | Environment Agency | 1 |
| Jerry Alford · Arable and Soils Advisor | Soil Association | 1 |
| John Williams · Head of Soils and Nutrients | ADAS | 1 |
| Lord John Fuller OBE · Chairman | Brineflow Ltd. | 1 |
| Martin Lines · CEO | Nature Friendly Farming Network | 1 |
| Mike Garrity · Corporate Director for Planning, Place | Dorset Council | 1 |
| Mike Rose · CEO | UK Water Industry Research | 1 |
| Mr Pawel Kisielewski · Chief Executive Officer | CCm Technologies | 1 |
| Natalie Prosser · CEO | Office for Environmental Protection | 1 |
| Nicola Riley · Deputy Director for Agriculture & Land | Environment Agency | 1 |
| Paul Hickey · Managing Director (RAPID - Regulators Alliance Progressing Infrastructure Development) | Ofwat | 1 |
| Peter Cowlrick · Technical Director | CCC Agronomy | 1 |
| Professor Alastair Lewis · Professor of Atmospheric Chemistry | National Centre for Atmospheric Science | 1 |
| Professor Anna Hansell · Professor of Environmental Epidemiology | University of Leicester | 1 |
| Professor Catherine Bondonno · Associate Professor | Edith Cowan University | 1 |
| Professor Gunter Kuhnle · Professor of Nutritional Epidemiology | University of Reading | 1 |
| Professor Jeremy Biggs · CEO | Freshwater Habitats Trust | 1 |
| Professor Kevin Hicks · Senior Research Fellow | Stockholm Environment Institute at the University of York | 1 |
| Pär Larshans · Sustainability Director | Ragn-Sells | 1 |
| Rob Cameron · Deputy Director of Strategy | Natural England | 1 |
| Tom Bradshaw · President | National Farmers' Union (NFU) | 1 |
| Tom Parkes · Air Quality Programme Manager | London Borough of Camden | 1 |
| Trevor Brown · Executive Director | Ammonia Energy Association | 1 |
| Vicky Robinson · Head of Sustainability | Agriculture Industries Confederation | 1 |
Correspondence
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| Published | Direction | Letter |
|---|---|---|
| 29 Oct 2025 | To committee | Letter from Parliamentary Under-Secretary of State on Indoor Air Quality 25.10.25 |
| 10 Sep 2025 | To committee | Letter from Baroness Sheehan to Defra Parliamentary Under-Secretary of State on Indoor Air Quality 10.09.2025 |
| 3 Sep 2025 | To committee | Letter from Defra Minister for Water and Flooding to Baroness Sheehan on Indoor Air Quality 01.09.2025 |
| 17 Jul 2025 | To committee | Letter from Baroness Sheehan to SoS for Defra, HCLG and HSC on Nitrogen Indoor Air Quality 15.07.2025 |