Andrew Cook from The Guardian (6)
I believe the answer is:
warden
'the guardian' is the definition.
(warden is a kind of guardian)
'andrew cook' is the wordplay.
'cook' is an anagram indicator.
'andrew' anagrammed gives 'WARDEN'.
'from' acts as a link.
(Other definitions for warden that I've seen before include "Head of certain schools, colleges, etc" , "Chief official in charge of a prison" , "Person in charge (of traffic etc)" , "Guard, keeper" , "Official with supervisory duties, as in relation to a church" .)