Revitalise part in here: Newham (5)
I believe the answer is:
renew
'revitalise' is the definition.
(thesaurus)
'part in here newham' is the wordplay.
'part in' says the answer is hidden in the clue.
'RENEW' is hidden in the letters of 'here newham'.
(Other definitions for renew that I've seen before include "Replace" , "Restore (worn out item)" , "Revive" , "Give fresh life to" , "what regeneration will do" .)