The British Koi-Keepers' Society
- Formed for the exchange of koi keeping information, through social events and a monthly magazine.
- http://www.bkks.co.uk/

Maidenhead Aquatics
- Chain of shops in southern England and Wales. Includes store locations, fish databank, guides and online forums.
- http://fishkeeper.co.uk/

Aquarist Classifieds
- Free advertising forum for aquarists. Includes fish, fry, tanks and equipment.
- http://www.aquarist-classifieds.co.uk/

Practical Fishkeeping Magazine
- Monthly publication with information on fishkeeping, marine, freshwater and ponds. Question and answer section.
- http://www.practicalfishkeeping.co.uk/

Tetra Fish UK
- Tetra a manufacturer and supplier of food, test, care, remedy and equipment products for aquariums and ponds. List of retailers, products with fish and aquarium care.
- http://www.tetra-fish.co.uk/

Ilford and District Aquarist and Pondkeepers Society
- Details of meetings, photo galleries, list of members, and event details.
- http://www.ilfordaquarists.co.uk

Fishkeeping Resources in the UK
- A guide to coldwater, tropical, marine, koi and pond retailers, clubs and vets in the UK.
- http://www.fishkeeping.co.uk

Waterlife
- Advice and information on the care of fresh and salt water aquariums and help with fish disease diagnosis and treatment. Includes a products directory.
- http://www.waterlife.co.uk

Ornamental Fish
- Information and community services for aquatic hobbyists and the industry.
- http://www.ornamentalfish.org/