The IWGEPP is made up of members from the following organisations and representative groups:

• Advanced Procurement for Universities & Colleges (APUC) 

• Barcelona City Council

• Brighton & Sussex Medical School

• City of Ghent 

• City of Oslo

• City of Malmö

• GIZ - Deutsche Gesellschaft für Internationale Zusammenarbeit

• Edinburgh Napier University 

• Electronics Watch 

• Ethical Trade Norway

• FEMNET EV

• Fairtrade Foundation UK

• Fairtrade Advocacy Office 

• Greater London Authority / Transport for London

• Government of Catalonia 

• Higher Education Procurement Association (UK)

• The Institute of Novact Non-violence 

• ICLEI - Procura+

• KU Leuven

• London Universities Purchasing Consortium (LUPC)

• London School of Economics (LSE)

• Netherlands Government Ministry of Education, Culture and Science

• Newcastle University

• NHS North West London Procurement Services 

• NHS Commercial Solutions (England)

• NHS Supply Chain (England)

• National Secretariat for Sustainable Public Procurement - Swedish Regions

• Nova University Lisbon 

• Norwegian Government - Central Procurement

• Norwegian Hospital Procurement

• Organisation for Economic Cooperation and Development (OECD)

• Procurement Implementation Centre North (Government - Netherlands)

• SETEM Federacion 

• SwedWatch

• Unison (UK)

• University of Sevilla

• University of Sussex

• University of Greenwich

• University of the West of England

• University of Cambridge 

• Université McGill (Canada)