Company went without leader as old as you and I (9)
I believe the answer is:
entourage
'company' is the definition.
(I've seen this before)
'went without leader as old as you and i' is the wordplay.
'without leader' means to remove the first letter.
'as old as you and i' becomes 'our age' (the same age as you and me).
'went' with its first letter taken away is 'ent'.
'ent'+'ourage'='ENTOURAGE'
(Other definitions for entourage that I've seen before include "Group of followers" , "Retinue, cortege" , "Group of attendants" , "company" , "A star may have one" .)