Well none of you spotted my mistake yesterday, but Kath did. Boaters in London will be able to get to the Thames all winter - via Bulls Bridge and Brentford. But if they turn right at Bull's Bridge they'll come to a dead end in half an hour or so. I guess the lower GU will be lovely and quiet like last last year when we were cut off from the North down as far as Denham.
By the way, I wrote to BW about Iron Bridge lock. I'll let you know if I get a reply. And I found a lovely old photo of the lock on the lovely Francis Frith collection site - take a look. The cottage is gone now.
I also found this picture (2007 -pre Herbie roof paint!) of the same lock
and a group of gongoozlers watching Kath toiling away at the windlass. The more astute amongst you will notice that the bridge is made of brick, not iron, so I can only assume that its present name is a hangover from an earlier incarnation.