Cheers lads.
Managed to correct half the car today. 2 bits of bad news :
1) There's an obvious circular patch of paint on the 3/4 panel, with deep sanding marks obvious around it, under the lacquer - so I assume it's seen a bit of filler at some point
. Managed to make it less obvious with a medium compound combo - how I missed it when viewing the car I don't know.
2) Fcuking water residue marks! As i'm doing a panel at a time, rinsed the panels but only dried the ones I was working on - the freshly corrected bonnet has hard water marks all over it now
Damn getting a black car!