I note you also posted your enquiry in the ATC section and I expect you will have seen and read the post entitled " Listening to UK ATC Communications - the Law".
Despite the fact that, firstly, my radio hasn't been working for some years and , secondly, I don't have current chart (s) for the appropriate area (s ), I would suggest the following frequencies may be of interest to you :-
1. GLA- INV, GLA-STN , low level 127.275
GLA- ABZ low level 124.5
2. High level frequencies - I'm not sure of the precise sector boundaries but some of following may be applicable in the areas you mentioned:-
126.925, 134.775, 135.855, 135.530, 132.730.
I don't have any information on military ATC matters.
I hope the above is of some assistance.