The building work has reached the point at which the steel for the window lintels is required. The steel is not yet ready. There's some back-story about architects and drawings (lack of) behind this, but at least the steel will now be cut to actual measurements from the building itself. I am told the steel will be delivered early on 5th October, so we've now got a week and a bit without buillders.
Hopefully, the steel will arrive, and the building work re-start a week from Monday.