Epsom Garden Society is affiliated to the following professional bodies:
- Royal Horticultural Society https://www.rhs.org.uk/
- Surrey Horticultural Federation https://surreyhorticulturalfederation.org/
- National Vegetable Society Surrey Section http://www.nvsuk.org.uk/ https://open-lectures.co.uk/National-Vegetable-Society/5132-National-Vegetable-Society-Surrey/Visit.html