Right, not hugely successful morning.
Assuming No 1 is nearest cambelt...
No 1, can't get plug out - the place that changed plugs last has left the rubber bit from plug socket on. I cannot get new socket on, even if I remove rubber from socket.
No 2 - about 11 - 12 bar
No 3 - about 6 bar
No 4 - about 6 bar
Due to depth of plug wells, I don't think I have a perfect seal with the gauge, so not 100% sure if conclusive?
Currently got the gauge stuck in No 4
and having trouble getting it out (brass handle bit on the gauge isn't long enough so having to tighten/losen as best I can with long nose pliers)
Once I get it off, I will take Matchless's advice and take for a spin - is it OK to run on neat water, as I used all my coolant on Tunnies Senny last night.