Gareth thank you for your reply, I bought this car new 4 years past at the end of July. in that time I have never added coolant to the reservoir. I have always assumed that this was something that would need done from time to time and it would be toped up at a service by the garage. I will seek a second opinion from another garage asap. in the meantime I will remove the excess coolant, ( I knew that the Turkey baster the wife bought would come in handy for something) and monitor how much fluid I am losing. once again thank you for the speedy reply.
Jack