Why is it that in some universities (The University of Glasgow for instance) a BSc (Hons) is at the same level as a MA?
It seems strange due to one being a Masters and the other being a Bachelors.

It's in name only, just something the old Scottish unis do (St Andrews, Glasgow, Edinburgh and I think Dundee as well). If you applied for a PG course with an MA(Hons) it wouldn't count as a masters.