Hi Ian, yes we walked it and it was great! Easy peasy, so well signposted no chance of getting lost! Totally recommend it for anyone, facinating. All I have to to now is try to find my great great grandpa in Nunhead Cemetary! Thanks a million. I think you may be on your own with the 28 miles....though it sounds fabulous. Have done the part of the Green Chain near Abbey Wood, lovely in Spring with the bluebells.