Policy:
- UN Intergovernmental science-policy Platform on Biodiversity and Ecosystem Services assessment of : Co-chair
- Chair of the European Pollinators Initiative expert group to develop an EU-wide pollinator monitoring scheme
- : Department for Environment, Food and Rural Affairs - Pollinator Advisory Steering Group
- Defra: Department for Environment, Food and Rural Affairs - Sustainable Intensification Platform Research Advisory Group
- European Food Standards Authority (ESFA): Advisor
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European Commission, DG Environment (ENV), DG Research and Innovation (RTD), DG Agriculture and Rural Development (AGRI), and DG Health and Consumers (SANCO): Advisor
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European Environment Agency (EEA): Advisor
- European Parliament: Advisor
- Food and Agricultural Organisation of the United Nations (FAO): Advisor
- Convention for Biological Diversity International Pollinator Initiative (IPI): Advisor
- : UK Parliamentary Office of Science and Technology: Advisor
- : Expert witness
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House of Commons Science, Innovation and Technology Committee inquiry into Insect declines and food security: Expert witness
- Business:
- John Spaden Lewis Trust for Natural Sciences: Trustee
- Waitrose Agronomy Group: Advisor
- Innocent Drinks: Agricultural Sustainability Strategy Advisory Board
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Pangaia: Chair of Scientific Advisory Board
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Oracle for Research: Collaborator
- Co-Op Pollinator Strategy: Advisor
- Research:
- : Sustainable pollination in Europe: joint research on bees and other pollinators: Management Committee
- Horizon 2020 Societal Challenge 2 'Food Security, Sustainable Agriculture, Marine and Maritime Research, and the Bio-economy': Advisory Group
- NGO
- Co-Chair of the IUCN of the Species Survival Commission
- World Bee Project: Co-founder