Informs ER actors about all directions (10)
I believe the answer is:
newscaster
'informs er' is the definition.
I can't judge whether this definition defines the answer.
'actors about all directions' is the wordplay.
'actors' becomes 'caster' (I can't justify this - if you can you should give a lot more credence to this answer).
'about' says to put letters next to each other.
'all directions' becomes 'news' (compass directions).
'caster' put after 'news' is 'NEWSCASTER'.
Can you help me to learn more?
(Other definitions for newscaster that I've seen before include "TV presenter" , "Baker, perhaps" , "TV regular" , "who reads the headlines?" .)