He'll have a good look around the West End (5)
I believe the answer is:
peter
'he'll have a good' is the definition.
The answer is a person as well as being a singular noun. This is suggested by the definition.
'look around the west end' is the wordplay.
'look' becomes 'peer' (peering is a kind of looking).
'around' means one lot of letters goes inside another.
'end' says to take the final letters.
The last letter of 'west' is 't'.
'peer' placed around 't' is 'PETER'.
Can you help me to learn more?
(Other definitions for peter that I've seen before include "Dwindle away to nothing" , "prison cell" , "- Pan, eternal youth" , "Boy's name - safe" , "Apostle - saint - first Pope?" .)