Records part of search I've started (8)
I believe the answer is:
archives
'records' is the definition.
(an archive is a collection of records)
'part of search i've started' is the wordplay.
'part of' indicates a hidden word.
'ARCHIVES' is hidden within 'search ive started'.
(Other definitions for archives that I've seen before include "Collections of records of organisations or institutions" , "Official records" , "Chronicles" , "Rich vase (anag.)" , "Record collection" .)