Blustery fellow going round the West End (5)
I believe the answer is:
gusty
'blustery' is the definition.
(synonyms)
'fellow going round the west end' is the wordplay.
'fellow' becomes 'guy' (I've seen this before).
'going round' is an insertion indicator.
'the west end' becomes 'st' (I can't explain this - if you can you should believe this answer much more).
'guy' enclosing 'st' is 'GUSTY'.
Can you help me to learn more?
(Other definitions for gusty that I've seen before include "Blowing intermittently" , "Of wind, blowing in bursts" , "Windy" .)