- London Sustainability Exchange
http://www.lsx.org.uk/
Independent, non-profit organisation created by London's public, private and voluntary sectors, aiming to set London on course to become the most sustainable world city

- London Wildlife Trust
http://www.wildlondon.org.uk/
One of 47 Wildlife Trusts in a nationwide network of nature conservation charities working to protect the UK's natural world in town and country.

- London Natural History Society
http://www.lnhs.org.uk/
Started in 1858 as the Haggerston Entomological Society, whose members met in a pub, smoked clay pipes and, when they could afford, bought natural history books. Now open to amateur naturalists and ramblers to enjoy London's rich natural heritage.

- London Biodiversity Partnership
http://www.lbp.org.uk/
Auditing London's key habitats and species, the LBP seeks to initiate the new biodiversity planning agenda in London. The web site includes action plans to kick-start this.

- BTCV London
http://www2.btcv.org.uk/display/btcv_london
Information about opportunities for volunteers to become involved in conservation activities in and around London. Including details of practical projects, training courses and affiliated groups.

- Environmental Law Foundation
http://freespace.virgin.net/dawn.h.lewis/ELF/
The Environmental Law Foundation (ELF) is the national UK charity linking communities and individuals to legal and technical expertise to prevent damage to the environment.

- The London Development Agency
http://www.lda.gov.uk/index.asp
Working for the Mayor, the LDA encourages economic development and sustainable regeneration of the capital's economy.