I've shared a map with you called Grafton Lock to Radcot Bridge: You can view and edit this map at http://maps.google.co.uk/maps/ms?hl=en&ie=UTF8&oe=UTF8&msa=0&...

Note: To edit this map, you'll need to sign into Google with this email address. To use a different email address, just reply to this message and ask me to invite your other one. If you don't have a Google account, you can create one at http://www.google.com/accounts/NewAccount?reqemail=ossoxon@earth.li.