Hi again,have bought some K-seal and put into cooling system as per instructions,seems to have done the trick !! :D Top Tip for removing thermostat,remove the brake oil container ,you can leave all brake pipes connected and just lift it clear slightly,this greatly increases your ability to reach the...

Sounds like a great product , any chance of finding out the exact name of this ,I,ve been to my local Halfords but nothing their for gasket repair.