South West Herts Cycle Group
Encouraging people to enjoy cycling
http://www.spokesgroup.com/

Sustainable Transport Charity
Providing creative, innovative and practical solutions to the transport challenges affecting us all.
http://www.sustrans.org.uk/

Three Rivers District Council's Cycling Strategy
http://www.threerivers.gov.uk/GetResource.aspx?file=TRDC_Cycling_Strategy.pdf