Old record store certain others dubiously exploit (8,5)
I believe the answer is:
somerset house
'old record store' is the definition.
I know nothing about this answer so I can't tell whether it can be defined by this definition.
'certain others dubiously exploit' is the wordplay.
'certain' becomes 'some' ('some' can be a synonym of 'certain').
'dubiously' is an anagram indicator.
'exploit' becomes 'use' (use is a kind of exploit**).
'others' is an anagram of 'rsetho'.
'some'+'rsetho'+'use'='SOMERSET HOUSE'
Can you help me to learn more?
(Other definitions for somerset house that I've seen before include "Wills place once" , "Neoclassical building on the Thames by Waterloo Bridge - shooter sues me (anag)" , "Former London site of the General Register Office" , "Wells place?" , "London art gallery" .)