Not a lot of progress, but some is better than none. I actually spent a bit of time last week making my own sheet metal folder. It's a bit light-on for serious stuff, but it should come in handy.
I've made a start on repairing the heater plenum, as well as modifying the radiator support panel. I know a lot of people get a bit funny about cutting the rad support, but I plan to use an aftermarket alloy radiator intended for use in a Mk2 16V VW Golf, which is quite a bit wider than than the standard Escort radiator. Plus I think the standard Escort radiator support looks a bit fugly. The pic is a bit blurry, but you can see here I've started cutting out the rust in the heater plenum area.

Given I will be using a fibreglass bonnet secured with bonnet pins, the standard bonnet catch on the slam panel will become obsolete, so rather than unpick spot welds, grind back brazed joints, then weld up all unwanted holes, I thought I'd just replace the section with new sheet.

I'm just waiting for my radiator to arrive before I weld in the new section.
And here's the first rust repair on the heater plenum.

Oh, and here's an 'action shot' a friend took the other night on his phone...