Wash in club at Hendon (5)
I believe the answer is:
bathe
'wash' is the definition.
(I've seen this before)
'in club at hendon' is the wordplay.
'in' indicates the answer is hidden within the clue.
'BATHE' can be found hidden inside 'club at hendon'.
(Other definitions for bathe that I've seen before include "Wash in water" , "Become immersed in" , "spend time in the water" , "Immerse in liquid for wash" , "Swim for pleasure, and clean oneself" .)