Desire apparent in Whitchurch (4)
I believe the answer is:
itch
'desire' is the definition.
(I know that itch is a more specific form of the action desire)
'apparent in whitchurch' is the wordplay.
'apparent in' indicates a hidden word (the answer can be seen in the clue).
'ITCH' can be found hidden inside 'whitchurch'.
(Other definitions for itch that I've seen before include "source of irritation" , "Niggling skin sensation" , "A nagging desire" , "Impatient desire (colloq.)" , "Long" .)