Thanks for that.
It looks like the sump is two pieces - the main sump and a small square sump hanging down below that.
I got the small square sump off, but the car is sitting on blocks that are under the main sump so there's no way I'll get that off.
And yes, it was a bitch of a job just getting the head off

Took me 4 hours, including a fair bit of time lying in the dirt trying to work out how to get the timing cover off

And no I don't have small hands. After removing the head I do however have bleeding hands

I may have to bite the bullet and buy a Gregory's workshop manual.