Prof. Kathy Lewis, BSc, PhD, FIAP, MIEMA
Professor of Agricultural Chemistry

Tel.: +44 (0)1707 284582

Kathy is an environmental chemist and research leader for the Agriculture and Environment Research Unit. She joined the University in 1995 and established AERU soon after. Kathy became a Professor in 2014.

Kathy's main areas of interest include environmental management of agriculture, horticulture and land-use, in particular environmental pollution from chemical inputs and the impacts arising from agricultural processes taking a whole farm perspective. She is also involved in the development of techniques to encourage a more sustainable agriculture including the socio-economic aspects, rural development, policy issues, environmental labelling and green taxes. Kathy's work covers a wide spectrum of topics including pesticides, nutrients, waste and resources and biodiversity, particularly with respect to climate change and rural development. This has evolved over the years to cover the entire farm to fork production chain particularly with respect to policy development.

Kathy is a Fellow of the Institute of Analysts and Programmers (FIAP) and a Member of the Institute of Environmental Management and Assessment (MIEMA).


Kathy's first degree in environmental chemistry with computer science was awarded by the Council for National Academic Awards (CNAA), and her PhD in agricultural best practice and was awarded by the University of Hertfordshire.

Previous employment

Before joining the University of Hertfordshire, Kathy spent 23 years at Warren Spring Laboratory and 1 year in Industry working as an Environmental Manager.

Selected projects

  • Waitrose pesticide load indicator for sustainable crop protection
  • Review of Livestock Feed Additives that have Direct Beneficial Effect on the Environment
  • The climate change mitigation potential of an EU farm: towards a farm-based integrated assessment
  • Assessment of reduction in environmental burdens through targeted measures compared with whole farm approaches in cropping and livestock systems
  • Development of chemical substance databases (PPDB, VSDB, BPDB)
  • Effective approaches to environmental labelling of food products
  • Developing software tools for pesticide risk assessment for the EU FOOTPRINT Project
  • Comparison of the Environmental Risk of Pesticides used in Conventional and Integrated Farming Systems for Farms
  • Concerted Action of Pesticide Environmental Risk Indicators (CAPER)

Recent publications

  • Warner, D.J., Tzilivakis, J., Green, A., Charlton, D. & Lewis, K.A. (2019). Determining the climate change mitigation potential of Countryside Stewardship. World Journal of Agriculture and Soil Science Change, 1(2), Link
  • Tzilivakis, J., Warner, D., Green, A. & Lewis, K. (2019). Spatial analysis of the benefits and burdens of Ecological Focus Areas for water-related ecosystem services vulnerable to climate change in Europe. Mitig. Adapt. Strateg. Glob. Change, 24(2): 205-233. DOI
  • Lewis, K.A., Tzilivakis, J., Warner, D.J. & Green, A. (2018). Agri-environmental Management in Europe: Sustainable Challenges and Solutions - From Policy Interventions to Practical Farm Management.. 5m Publishing, Sheffield, UK. ISBN: 1912178443
  • Lewis, K.A. & Tzilivakis, J. (2017). Review of the published exposure data to pesticides for residents and bystanders, and for environmental risk assessment: Final report. EFSA supporting publication 2017:EN-1204, 101 pp. DOI
  • Green, A., Lewis, K.A., Tzilivakis, J. & Warner D.J. (2017). Agricultural climate change mitigation: carbon calculators as a guide for decision making. International Journal of Agricultural Sustainability, 15(6): 645-661. DOI

Prof. Kathy Lewis's extended publications list.

Link to UH profile page

University of Hertfordshire
University of Hertfordshire, 2017.