This is where I realised I made a 'newbie error'. The body was by no means prepped to an acceptable standard, so I had to remove all the lights and fittings.
I gave the body another rub down with 600 and then 1200 grit wet and dry. Then applied a layer of filler spray. Not sure if this is 'accepted practise', but I find it does help smooth out and remove those minor imperfections.
The body is now looking flatter ... if not a little too yellow for my liking.
After another rub down with 600 / 1200 grit ...
I applied the grey primer, much easier on the eye ...