Expected conditions to endure for English actors (7,8)
I believe the answer is:
weather forecast
'expected conditions' is the definition.
(expected weather conditions)
'endure for english actors' is the wordplay.
'endure' becomes 'weather' (synonyms).
'english' becomes 'e' (abbreviation).
'actors' becomes 'cast' (group of actors).
'weather'+'for'+'e'+'cast'='WEATHER FORECAST'
'to' acts as a link.
(Other definitions for weather forecast that I've seen before include "Met objective" , "prediction" , "Predicton" , "item after news" .)