Well, luck has certainly been on my side.
Our neighbour who is a fully qualified mechanic was just moving out here as the car died. So rather than taking it to a main dealer we let him tow it away to see what damage had been done. Hurrah - it was only the water pump afterall, no damage at all to anything else. He also checked over a few other things and in addition to the pump we also had a new belt, air filter,
filter, pollen filter,
change and coolant plus the car came back gleaming inside and out. The price? It cost us 330 euros which is about £250. Fantastic!! The car is now running sweet as a nut.
Thanks for your helpful comments