- American Orchid Society for USA based orchid information
- BHGS Ltd, horticultural supplier, Evesham (supplier of Melcourt Orchid Bark - Medium)
- Burnham Nurseries
- Cheltenham & District Orchid Society
- Dave Parkinson Plants
- East Midlands Orchid Society
- Go Wild Peru (Ian Fuller)
- Hinckley & District Orchid Society
- Internet Orchid Photo Encyclopedia: a huge and invaluable illustrated database of species
- Isle of Portland Orchids (Simon & Annie Pugh-Jones)
- Laurence Hobbs Orchids
- North of England Orchid Society: their list of orchid shows around the country is very helpful
- Orchid Alchemy (Andrew Bannister)
- Orchid Botanics (Trey Sanders)
- Orchids by Peter White
- Phalaenopsis and More (Francis Quesada-Pallarés)
- Royal Botanical Gardens Kew Checklist: the ultimate reference source for orchid species. A searchable database giving both correct names and synonyms, with links to photos.
- Sheffield & District Orchid Society
- Solihull & District Orchid Society
- The British Orchid Council for details of other orchid societies, nurseries, diary of events, etc.
- The Orchid Society of Great Britain
- The UK International Orchid Show