Hi Tony, Still havent figured out what it is, like i said i did a complete flush of the system and tested the thermostat. And nothing has changed, I've noticed there are hoses going from the cooling system to the car which I'm going to check at the weekend. A friend said it mite be sommat electrical which i really dont want to do myself because I know nothing about car electrics. I mite take the car to an auto electrician to see if they can determine the problem and fix it.
I will report back at the weekend with my finding's if no one has found out what the problem is before.
Martyn