- Friends of The Ridgeway http://www.ridgewayfriends.org.uk/ An Association of people committed to preserving The Ridgeway as an ancient greenway for quiet enjoyment by the public.
- Hertfordshire County Council http://www.hertscc.gov.uk
- Hertfordshire Tourism http://www.hertfordshire.com/pages/categories/show-directory.asp?id=110
- Herts & Middlesex Wildlife Trust http://www.hertswildlifetrust.org.uk/
- History On Your Handlebars http://www.historyonyourhandlebars.co.uk/about.html Cycle tours: weekend or day tours including part of The Ridgeway
- Icknield Way Association http://www.icknieldwaypath.co.uk The Icknield Way Association promotes the 110 mile (177km) path linking the Ridgeway with the Peddars Way
- Icknield Way Trail http://www.IcknieldWayTrail.org.uk The Icknield Way Trail promotes the 170 mile (274km) riders route from the Ridgeway in Buckinghamshire to link with the Peddars Way riders route in Norfolk
- Let's Stay Chilterns http://www.chilterns-stay.co.uk
- Long Distance Walkers Association http://www.ldwa.org.uk
- Mountain Biking Swindon http://www.mbswindon.co.uk/ For mountain biking in and around Swindon, including The Ridgeway.