Oscar turned up collar in Scottish resort (4)
I believe the answer is:
oban
'scottish resort' is the definition.
(resort town in Scotland)
'oscar turned up collar' is the wordplay.
'oscar' becomes 'O' (phonetic alphabet: alpha, bravo, charlie etc.).
'turned up' shows that the letters should be reversed in order.
'collar' becomes 'nab' (both can mean to catch a person).
'nab' backwards is 'ban'.
'o'+'ban'='OBAN'
'in' is the link.
(Other definitions for oban that I've seen before include "Western Scottish port" , "port required" , "Port and holiday centre on the west coast of Scotland" , "Scottish west coast resort" , "Argyll town" .)