Got some pictures....

It's deffo been leaking round No 1 cylinder between chamber and the water jackets which would explain why the plug always seemed to corrode on that cylinder....

The oil in No 4 is related to the head/valves/seals/guides itself as you can see oil in the ports and a film of oil on the valves only on that cylinder (mainly the rear most exhaust valve and both the inlet valve). We will investigate this further to find out the exact cause but it doesn't look like the head gasket is the cause of the first thing in the morning misfire....also in the chamber in the head, there is more carbon deposits than in the other chambers.

The gasket was warped ever so slightly round cylinder 4 but round No 1 it was warped so badly that the 3 layers are opening up away from each other and are about 40mm apart! I will get pictures if you so require...

It's just odd why the car has only done something like 6k on this gasket...I know we had thermostat problems ages ago but it never actually boiled up...