Canon, nurse, butcher, presenters? (10)
I believe the answer is:
announcers
'presenters?' is the definition.
(I've seen this before)
'canon nurse butcher' is the wordplay.
'butcher' indicates anagramming the letters (I've seen 'butchered' mean this (I've seen this in other clues)).
'canon'+'nurse'='canonnurse'
'canonnurse' anagrammed gives 'ANNOUNCERS'.
(Other definitions for announcers that I've seen before include "Hosts" , "Presenters" .)