Dick, Tommy and yours truly, we're told (7,3)
I believe the answer is:
private eye
'dick' is the definition.
(thesaurus)
'tommy and yours truly we're told' is the wordplay.
'tommy' becomes 'private' (informal term for a British soldier).
'and' means one lot of letters go next to another.
'yours truly' becomes 'I' (the person that set this crossword).
'we're told' indicates a 'sounds like' (homophone) clue.
'i' sounds like 'eye'.
'private'+'eye'='PRIVATE EYE'
(Other definitions for private eye that I've seen before include "investigator" , "supplement to work of police?" , "Freelance detective" , "50 today" , "Satirical magazine - undercover detective" .)