100 Great British walks – This is a great interactive map produced by the Guardian newspaper in association with the National Trust, where they've pinpointed some of the UK's greatest walks. They are well guided and very informative, choose from Stourhead or Fontmell Down along with others in the South West.
http://www.guardian.co.uk/travel/interactive/2012/may/12/national-trust-walking-routes-interactive-map