Every individual getting ratted around centre of Leeds gets complete transformation (3,6)
I believe the answer is:
sea change
'complete transformation' is the definition.
'every individual getting ratted around centre of leeds' is the wordplay.
'every individual getting' becomes 'each' (I can't justify this - if you can you should believe this answer much more).
'ratted' becomes 'sang' (I've seen this in another clue).
'around' indicates putting letters inside.
'centre of leeds' becomes 'e'.
'each' put inside 'sang' is 'seachang'.
'seachang'+'e'='SEA-CHANGE'
'gets' is the link.
Can you help me to learn more?
(Other definitions for sea change that I've seen before include "Significant transformation of marine origin" , "Significant or unexpected transformation - on the briny?" , "Profound transformation" , "Notable transformation" , "Major transformation" .)