I think I have a solution - not quite what I'd planned, but...
I've covered the pod in two patches - looks a bit ropey at the moment, but a couple of bits of strategically-positioned self-adhesive trim edging (which hopefully will arrive today!) should cover the joins.
I've attached another pic of the centre console panel - the fasten seat belt gauge won't actually go here, but the panel looks great with more gauges in! :)
Damn. Hadn't realised that in order to get the dash rail out you have to take the windscreen out too...
As it happens there's a bit of rust bubbling on the scuttle that needs sorting out and a chip or so in the screen, so I need to replace it - but after my experience last time of the doing the front screen I'm going to wait until I've got some help!!