3 Counties Hydroponics - Specialists in hydroponics supplies - including systems, nutrients, growing media, pest control and PH management products. Also offer free information and advice.
Acid Hydro - Hydroponics and gardening experienced.
Aquaculture Hydroponics UK - For grow lights, hydroponics systems, grow kits & hydroponic nutrients - FREE delivery available in the UK.
Basement Lighting - Quality UK Hydroponics & Grow lights at the lowest prices.
Belfast Indoor Gardening - Northern Ireland business retailing and wholesaling hydroponics and horticultural & gardening products.
Boss Lighting - Quality hydroponic, aquatic and outdoor lighting products and accessories,next day delivery on most.
Bud Green - Indoor gardening solutions.
Elements Hydroponics - Offering friendly advice and stocking a full range of hydroponics equipment for both the amateur and professional soiless gardener. (Based in Yorkshire, UK).
Estoric Hydroponics - UK's leading retailer stocking the greatest selection of hydroponics equipment and accessories.
Greenfields Hydroponics - Suppliers of a wide range of high quality indoor and outdoor gardening equipment including: Complete Grow Kits, horticultural lighting, media and nutrients.
Greenleaf Systems - Hydroponics equipment & supplies. Starter kits at £145 incl. quality lighting system and nutrients.
Greens Horticulture - Equipment for hydroponics and  grow your own  enthusiasts in the South West. 
Grotec - Commited to helping you to grow indoors using the method best suited to you.
Growell - Find all the hydroponics information and products you need for successful indoor growing. Great for beginners and hydroponics enthusiasts.
Hempstead Hydroponics - Selling the best hydroponic equipment including Autopot as featured in Gardeners World.
Holland Hydroponics - Holland Hydroponics offer a wealth of information plus an online store for all your hydroponic needs.
HydroGreen - Quality hydroponics equipment at low prices. Buy online. A great range of quality products. Free UK delivery over £200.
Hydrohobby - Retailer specialising in hydroponics. Shop near coventry open 7 days a week.
HydroMall - Searchable database contains over 700 hydroponics store listings worldwide, InfoCart product information inquiry system, and an abundance of hydroponics articles and links.
Hydroponics Hydroponics - Hydroponics equipment, UK mail order and shop, based in Middlesbrough.
Indoor Growing Store - Hydroponics and hydroponic equipment delivered direct.
Norfolk Lights - Norfolk Largest hydroponics outlet suppliers of all top UK and dutch brands.
Progrow - Retail a full range of hydroponic, indoor gardening and greenhouse supplies at competitive prices.
Progrow Scotland - Suppliers of quality hydroponics products.
South Coast Hydroponics - Hydroponics, Systems, Rockwool, Nutrients, Lights, Growing Mediums and Ventilation.
SuperLED - Indoor Led Growing Lights, Save 75% On Power.
The Green Machine - Retail and online store for all your Hydroponics needs- only quality products sold.
The Hydroponicum - Hydroponics information and online catalog includes starter kits, nutrients and propagation.
The Online Electrical Wholesaler - Suppliers to trade and public of electrical and hydroponics-home of 'plug and grow' and envirolites.