Grand English actor's gluttony (5)
I believe the answer is:
greed
'gluttony' is the definition.
(I've seen this before)
'grand english actor's' is the wordplay.
'grand' becomes 'g' (G is short for grand as in a thousand).
'english actor' becomes 'reed' (Oliver Reed, 1938-1999).
'g'+'reed'='GREED'
(Other definitions for greed that I've seen before include "Craving" , "Rapacity" , "Immoderate desire" , "selfish habit" , "Gluttony" .)