Natural England
- The statutory service responsible for looking after the wild plants, animals, biodiversity, and natural features of England. Includes details of projects, programmes and publications, virtual tours of nature reserves, and volunteer information.
- http://www.naturalengland.org.uk/

River Thames: Floating Down the River
- Includes geology, geography, statistics, navigation, history, pollution, locks, origins of place names, and boat mooring information.
- http://www.the-river-thames.co.uk/riverthames.htm

Severn Bore
- Describes the tidal surge that sweeps up the estuary of the River Severn. Videos, pictures, and bore times.
- http://www.severn-bore.co.uk/

Sussex Biodiversity Records Centre
- Works with naturalists to provide biological information on the species and habitats of Sussex. Reports on rare and protected species, surveys, designated and non-designated areas and key habitats and features.
- http://www.sxbrc.org.uk/

Peak District National Park Authority
- Features a learning zone and visitor information.
- http://www.peakdistrict-npa.gov.uk

Kemerton Conservation Trust
- A charitable trust promoting the conservation and preservation natural and man made beauty through countryside stewardship in the Worcestershire, Gloucestershire and Herefordshire area.
- http://www.kemerton.org/