Worker having to live at central Harlesden (3)
I believe the answer is:
bee
'worker' is the definition.
(thesaurus)
'to live at central harlesden' is the wordplay.
'to live' becomes 'be' ('be' can be a synonym of 'live'**).
'at' says to put letters next to each other.
'central' means to look at the middle letters.
The middle of 'harlesden' is 'e'.
'be'+'e'='BEE'
'having' is the link.
(Other definitions for bee that I've seen before include "Busy person" , "Honey maker" , "Four-winged insect" , "Social gathering" , "Stinging insect" .)