Sounds good. Not Keston/Farnborough way by any chance? Some good spots on the Loop round there.
I spend the weekend jumping out of the way of bicycles on the Lea Valley walk. I must admit that if I were a cyclist, there would be no better place to to it than on a canal tow-path. No cars, no hills, no lights, and the only thing you have to worry about is scattering pedestrians so they don't slow you down.