I have a friend who is looking for a privale stretch of river to purchase, he made some enquiries about this, it isnt "private" at all, in as much as everybody and his dog can walk anywhere along the stretch, it is classed as a council owned "nature reserve" and as such attracts quite a lot of footfall, ideal if you want to fish in amongst dog walkers , parties of school kids, etc etc. Keeping the above away from the fishing and bankside would be quite a feat in itself, the description is somewhat "economic " in detail .
It has been on the market for quite some time apparently, lots of interest until the above comes to light.
David