Some further work on the underside this week.  O/S inner sill clamped into place with all jacking points and outriggers in position to make sure they’ll fit correctly (I also trial fitted the floor pan half while I was there):

Inner sill plug welded to all of the floor supports:

And a quick clean up and light coat of electrox over the welds:

And before I can weld in the rear cross member I need to fix this ‘repair’ done by a previous owner (the welding wass pretty rough and the patch was straight over the rusty section underneath):

Repairing the curved section around the rear beam will be interesting as the panel dips slightly as it reaches the beam. I’ll see what I can come up with over the weekend.