Spiritual leader in Ealing and Hillingdon (6)
I believe the answer is:
gandhi
'spiritual leader' is the definition.
(Gandhi is an example)
'in ealing and hillingdon' is the wordplay.
'in' indicates a hidden word.
'GANDHI' is hidden in the letters of 'ealing and hillingdon'.
(Other definitions for gandhi that I've seen before include "Indian spinner" , "Mahatma ....., great Indian leader" , "Indian activist" , "Indira, Rajiv or Sonia" , "who played leading role in getting England out" .)