Companion in A&E, with daughter, felt sore (5)
I believe the answer is:
ached
'felt sore' is the definition.
'companion in ae with daughter' is the wordplay.
'companion' becomes 'ch' (Companion of Honour).
'in' means one lot of letters goes inside another.
'with' says to put letters next to each other.
'daughter' becomes 'd'.
'ch' going into 'ae' is 'ache'.
'ache'+'d'='ACHED'
(Other definitions for ached that I've seen before include "Throbbed" , "caused discomfort" , "Felt a dull pain" , "Hurt" , "Had a continuous pain" .)