British Waterways
Search local waterway offices which can help you plan a walk along the Thames.
http://www.british-waterways.co.uk/site/walking_27.asp

Fellwalk.co.uk
Ideas for scenic walks in London.
http://www.fellwalk.co.uk/london.htm#books

Jubilee Walkway
The official website of the capital's best known walking trail.
http://www.jubileewalkway.com/

London Footprints
Free printable walking guides to London.
http://www.london-footprints.co.uk/

North London Walking Club
Join the club or just refer to the route maps in the "Permanent Trail List" section.
http://www.hawkins.ndirect.co.uk/north_london_walkers/

Shortwalk.blog.co.uk
Download a map of the London Underground detailing walking distances between stations, so you can work out when it is quicker to simply walk.
http://shortwalk.blog.co.uk/

Thames Path Online Guide
The path runs along the Thames all the way to Oxfordshire. Find out more about it at this official site.
http://www.thames-path.co.uk/

The Ramblers' Association
Lists walking routes in London and the surrounding countryside.
http://www.ramblers.org.uk/info/regional/london.html

Tour UK
General advice on walking in London.
http://www.touruk.co.uk/london_transport/transport_walking.htm

Transport for London
Plan your walking route, check out the air quality or read an online newsletter for London walkers at this website.
http://www.transportforlondon.gov.uk/streets/walking/home.shtml

Visit London
An excellent guide to the various public walking routes scattered around London.
http://www.visitlondon.com/travel/walk_london/walking_routes.html

Walk It.com
Work out how to walk to any location in London, how much time it will take, and how many calories you will burn in the process using this online route calculator.
http://www.walkit.com/

Walk this Way
Download free walking guides to London at this website.
http://www.southbanklondon.com/walkthisway/index.html

Waterscape.com
Information on walking along the country's inland waterways.
http://www.waterscape.com/walking/