Love given to cleaner reforming strict policy (4,9)
I believe the answer is:
zero tolerance
'strict policy' is the definition.
(as in a zero tolerance policy)
'love given to cleaner reforming' is the wordplay.
'love' becomes 'zero' (love is zero in tennis).
'given' is a charade indicator (letters next to each other).
'reforming' indicates anagramming the letters.
'cleaner' anagrammed gives 'lerance'.
'zero'+'to'+'lerance'='ZERO TOLERANCE'
(Other definitions for zero tolerance that I've seen before include "what might clean up our streets?" , "Uncompromising application of the law against antisocial behaviour" , "Tough law-and-order policy" , "Strict police policy" , "strict rule enforcement" .)