Class actors always given similar roles? (8)
I believe the answer is:
typecast
'always given similar roles?' is the definition.
'class actors' is the wordplay.
'class' becomes 'type' (I've seen this before).
'actors' becomes 'cast' (I've seen this before).
'type'+'cast'='TYPECAST'
(Other definitions for typecast that I've seen before include "Given the same sort of parts" , "Always given the same sort of roles" , "with no variation in roles" , "engaged for similar roles" , "Assigned the same kind of role repeatedly" .)