Busy editors, ignoring Independent, walked purposefully (6)
I believe the answer is:
strode
'walked purposefully' is the definition.
'busy editors ignoring independent' is the wordplay.
'busy' indicates an anagram.
'ignoring' suggests deleting specific letters.
'independent' becomes 'i'.
'editors' with 'i' taken away is 'edtors'.
'edtors' with letters rearranged gives 'STRODE'.
(Other definitions for strode that I've seen before include "went on foot" , "Galumphed" , "Paced" , "Walked fast with long steps" .)