University in London area in vogue (7)
I believe the answer is:
popular
'in vogue' is the definition.
(thesaurus)
'university in london area' is the wordplay.
'university' becomes 'u' (abbreviation for university).
'in' indicates putting letters inside.
'london area' becomes 'poplar' (I've seen this before).
'u' inserted into 'poplar' is 'POPULAR'.
(Other definitions for popular that I've seen before include "Pleasing to many" , "Widely liked" , "Trendy" , "Democratic - of general appeal" , "The people's" .)