Geoffrey Payne is active in many research and consultancy networks. He was a co-founder of the Network-Association of European Researchers on Urbanisation in the South (N-AERUS), and is a member of the Core Group and a Director with responsibility for links with international agencies and consultants. He is a member of the streeing group for the Tsunami Recovery Network, and was the co-founder of the Land Titling Network .
In 1984, he organised an Inter-Schools conference on development at Oxford Polytechnic (now Oxford Brookes University) which has since become a major annual event hosted by different colleges each year. He has been an external examiner to several British universities and examined PhD candidates in the UK and other countries.
Geoff has contributed papers to numerous international conferences in countries including Benin, Brazil, India, Indonesia, Kenya, Lebanon, Pakistan, Peru, Sierra Leone, South Africa, Sweden, Tanzania and the USA. He is on the editorial board of two major academic journals - Habitat International and Open House International.