OK, first of all, Thanks for the input, I apologise for the delay but due to weather etc I've not been able to do anything with the car.
The battery wad dead, we tried it again and it wouldn't even light the warning lights, we presumed the battery had failed, but we noticed that the electric fan kept intermittently switching on (must have been a little bit in the battery) even though the ignition was switched off. We thought it may be due to errors with battery being flat or something, like the ESP light.
Fitted a new battery today, car fired up ran great, problem solved, or so I thought. During the evening a couple of hours after fitting the new battery, I heard a noise outside, the electric fan was full on, I went to the car and as soon as I switched the ignition on the fan stopped. I unplugged the fan to stop it killing the new battery and now have to find the cause of this problem. Could it ge the coolant temperature sensor? The ESP light went out when I drove the car.