Glaswegian at large and unpunished? (4,4)
I believe the answer is:
scot free
'unpunished?' is the definition.
(I've seen this before)
'glaswegian at large' is the wordplay.
'glaswegian' becomes 'scot' (I've seen this in another clue).
'at large' becomes 'free' (similar in meaning).
'scot'+'free'='SCOT-FREE'
'and' is the link.
(Other definitions for scot free that I've seen before include "(Get away) incurring no penalty" , "avoiding damage" , "After next month a union may be so" , "Unpunished" , "no reprisals" .)