Security I provided to Scottish town jurisdiction (9)
I believe the answer is:
bailiwick
'jurisdiction' is the definition.
(I know that bailiwick is a type of jurisdiction)
'security i provided to scottish town' is the wordplay.
'security' becomes 'bail' (I've seen this in another clue).
'provided to' means one lot of letters go next to another.
'scottish town' becomes 'wick' (I've seen this before).
'bail'+'i'+'wick'='BAILIWICK'
(Other definitions for bailiwick that I've seen before include "special field" , "legal official's jurisdiction" , "Jersey" , "Area of interest" , "Jurisdiction of a bailiff" .)