National Vegetable Society (UK)  
   A contact point for all vegetable gardeners and allotment holders in the United Kingdom, who have an interest in competitions or shows. Information on membership, organisation and activities.
   http://www.nvsuk.org.uk/

The Royal Horticultural Society  
   Britain's Gardening Charity, was founded in 1804 to encourage the science, art and practice of horticulture in all its branches; site provides information about its famous shows, an online shop, an interactive plant finder, a guide to gardens and activiti
   http://www.rhs.org.uk/

Thrive  
   The national horticultural charity empowering disadvantaged, disabled and older people through gardening and horticulture. Runs a number of garden projects, and an expanding regional network.
   http://www.thrive.org.uk/

Nantwich Flower Club  
   Photo album, event listing and other member information from flower-arranging club.
   http://www.nfc.org.uk/

National Trust for Scotland  
   Guardian of Scotland's historic, architectural and natural heritage.
   http://www.nts.org.uk/

The National Trust  
   For places of historic interest or natural beauty in England, Wales and Northern Ireland
   http://www.nationaltrust.org.uk/

Horticulture for All  
   Horticulture for All is the working name of The Federation to Promote Horticulture for Disabled People (FPHDP), a charity designed to encourage and facilitate communication between people working in the fields of social and therapeutic horticulture.
   http://ourworld.compuserve.com/homepages/Jane_Stoneham/homepage.htm

Hampshire Clubs, Societies & Associations  
   list of gardening groups supported by Hampshire County Council
   http://www.hants.gov.uk/istcclr/ifbcx233.html

Permaculture Association  
   Supports people and projects through training, networking and research, using the ethics and principles of 'permanent agriculture'.
   http://www.permaculture.org.uk/

National Association of Flower Arranging Societies  
   Teaching charity with around 1,500 flower clubs affiliated to 21 UK areas and 100,000 individual members offers listing of courses, events and publications.
   http://www.nafas.org.uk/

Oldland Horticultural Society  
   Information about flower shows and courses.
   http://www.oldlandshow.bristol-uk.com/

Community Composting Network  
   Provides advice and support to community composting projects across the UK
   http://www.othas.org.uk/ccn/index.html

The Gardeners Club  
   A directory of all local and national gardening related clubs, societies and organisations in the UK.
   http://gardenersclubsocieties.co.uk/

Handforth Gardening Society  
   Based in Cheshire. Details of the village show, garden walks and committee contacts.
   http://www.gotobiz.co.uk/hgs/

Chiswick Horticultural Society  
   A member-run society for garden and allotment enthusiasts in Chiswick, which organises flower shows, visits and social events. The society has a trading hut where plants and supplies are sold at discounted prices.
   http://www.chsw4.org