How busy is that canal with commuter cyclists? I'm curious as I only cycled it at the weekend from London Fields to Regents Park. It was an awful experience, one I won't be repeating in a hurry certainly not every morning and evening... most of the towpath is very narrow you certainly can't cycle two abreast, and under bridges it is even narrower barely a couple of feet. Add in kids throwing bottles and cans at you, weird drunks, and the obvious comedy attempts to push you in, this was not a pleasant leisure ride. Maybe if the towpath was widened, it would be better or very unlikely the canal could be drained, surfaced and it would make an awesome dutch width traffic free cycle path.