kytelly wrote:
I'm trying to use the journey planner to work out the best walking
routes around London.

However for anything over 1 hour it sometimes claims no route
available, but this is intermittent. I've tried ticking the various
walking only options but to no effect.

Any tips for success here?

If you want purely walking routes (i.e. with no other modes of transport
involved) try using http://www.walkit.com/ instead.





--
Each day a man watched a donkey walk past a high wood fence with one
plank removed. Each day he saw a nose, then the ears, then the neck,
forequarters, back and finally the tail. He pondered this for a time
and eventually declared. “I understand now. The nose causes the tail”