Me too Alan,I forgot the Blackwater.
Also used to fish on the Stour,all my old stomping grounds,happy memories of all of them and the Lea too.
My first night fishing session was just above Passingford Bridge, in the old mill pool.
Frightened the life out of myself cycling home to Harold Hill in the early hours, no lights on the bike and the shadows moving in!
Jub,I don't know if it's still there but, the Roding at Buckhurst Hill Cricket ground used to give me some fun.