A few more service things done:
My jump leads didn't work - no continuity = useless jump leads. The copper was crimped and cut straight through at the factory. Trimmed and now soldered – much better.
Inside the rocker cover still looking very clean. Adjusted all the valve gaps to 0.25mm, glad there are only 12 valves to do! Most needed a little tweak. Also gave the oil spray bar a good clean out with brake cleaner while the cover was off.
The rocker gasket was a bit very second hand, I managed to get one in Basingstoke same day which was a pleasant suprise! It explains why there was some oil in the plug holes.