The construction around the river lock at Stratford make access to the lock from the river extreemly difficult. The signs say use your BWB key to gain access, the only thing they don't say is that you have to moor your boat on the oposite bank of the river and walk over the bridge to operate the lock. if you are single handed you then have to walk back and get the boat. Otherwise climb the lock gate.
Access to the site, with only slight modification to the security/safety fencing would change the whole issue.