I would suggest checking the water level. If it is low, check the expansion tank cap to see if it is sealed correctly. Next, carry out a pressure test on the cooling system and identify where (if any) the leak is coming from.

It is unusual for the water pump to fail at this mileage, but it can happen. You may want to look for a Good Garage local to you and get them to inspect the car: good-garage-guide.honestjohn.co.uk/