Gareth,
I can name 2 vets in the Cumbernauld area where you most cetainly should not go! One is a complete idiot and the other a money grabbing git! I'll name both if you PM me.
There is a decent one in Kirkintilloch - right on the cross. Very good for treatments but not 'shoot friendly.' I myself use Armac based in South Lanarkshire (Biggar) - they are the traditional type serving farmers, shoots and gamekeepers. A bit of a jaunt but all my 4 dogs are treated there, my father's dogs and my mothers.