In Greater London, the place for hotheaded 'yes' voters (5)
I believe the answer is:
hayes
'in greater london' is the definition.
The definition suggests a singular noun which matches the answer.
'place for hotheaded yes voters' is the wordplay.
I cannot quite understand how this works, but
'yes' could be 'aye' ('aye' means 'yes') and 'aye' is found within the answer.
This explanation may well be incorrect...
'the' is the link.
Can you help me to learn more?
(Other definitions for hayes that I've seen before include "Former US President" , "Location in Middlesex" , "West London town; ah, yes (anag.)" , "Place in Middlesex" , "Part of Hillingdon" .)