National Vegetable Society Northern Branch
- Comprised of local vegetable growing associations in northern England; information about local groups, vegetable growing advice, horticultural shows, activities, membership and contact details.
- http://www.nvs-uk.org.uk/

British Pelargonium and Geranium Society
- Includes details of local clubs, shows and events, publications.
- http://www.bpgs.org.uk/

Japanese Garden Society
- Seeks to bring together those who are interested in Japanese-style gardens. Includes society history, upcoming events, and membership information.
- http://www.jgs.org.uk/

Gardeners Club
- A directory of all local and national gardening related clubs, societies and organisations in the UK.
- http://www.gardenersclub.co.uk/societiesinfo.asp

The North of England Horticultural Society
- Information about the shows and exhibitions organised by the Harrogate-based society.
- http://www.flowershow.org.uk/index.php?page=8

Community Composting Network
- Provides advice and support to community composting projects across the UK
- http://www.communitycompost.org/

National Allotment & Leisure Garden Society
- NSALG is a UK nonprofit group aiming to minimise the loss of gardens for individual use.
- http://www.nsalg.org.uk/

Slinfold Horticultural Society
- Promoting the knowledge, skill and practice of gardening, horticulture and floral art in Slinfold, Horsham, West Sussex.
- http://www.slinfoldhortisoc.co.uk

The Avon Gardens Trust
- An educational charity that aims to preserve, enhance and re-create for the enjoyment and education of the public parks and gardens in the former county of Avon.
- http://website.lineone.net/~avongardenstrust/

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

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/

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

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

The National Trust
- Portfolio includes a number of historic gardens and landscapes, in England, Wales and Northern Ireland. Includes visitor detail on most of these, and websites for the principal gardens.
- http://www.nationaltrust.org.uk/

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

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

The Royal Horticultural Society
- Aims to encourage the science, art and practice of horticulture; site provides information about its shows, an online shop, an interactive plant finder, a guide to gardens and activities around the country.
- http://www.rhs.org.uk/

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/