Entertainer performing satire about Tory leader (7)
I believe the answer is:
artiste
'entertainer' is the definition.
(artiste is a kind of entertainer)
'performing satire about tory leader' is the wordplay.
'performing' is an anagram indicator.
'about' means one lot of letters goes inside another.
'tory leader' becomes 't' (I've seen this in other clues).
'satire' anagrammed gives 'artise'.
'artise' placed around 't' is 'ARTISTE'.
(Other definitions for artiste that I've seen before include "Trouper" , "Attires like entertainer" , "A sitter for creative person" , "Attires for professional entertainer" , "Attires (anag.)" .)