hey fellow glasgow person (well I am in ayrshire now still counts though)
I just tried yell.com and a list of places came up maybe phone them and see what they got. Far too many to type in here and I haven't tried any of them so couldnt recommend any.
There is one called Easterton also one just before that not sure of name tho. Also one near Haughhead at the botton of the Campsies not sure of the name either, just noticed them when driving past. Not much help really but if in the area you are looking worth a drive around.
Lost, i was at easterton for 4 years a while back and i think the facilites are good but as it is a riding school maybe not for me, thanks anyways hmm may have a drive down to the campsies tho..