Got home with a warm engine, tried first with the spring plug spanner but wouldn't move.
Hunted around for a proper plug socket and amazingly found one,however it was was for a lawnmower and had no way to attach it to a rachet, i persivered and found a socket to go tightly over it then connected to an extendy bar and a t leaver.
Put it over the plug and went for it, it slipped, so i tried again, 'slip' 'crack' , oh no, has it broke the plug? Has it rounded off?, Tried with a different socket, no grip, is it rounded off, better put it back together, but wait, the end moves, does this mean it's sheared?
I get some pliers to see if the worst has happened,but the plug is still intact! Wait, it finger tight! It's unscrewing! Yes! It's out ( threads covered in oil)
I am the man, it's done and changed!