Stories about National Trust gifts (7)
I believe the answer is:
talents
'gifts' is the definition.
('talent' can be a synonym of 'gift')
'stories about national trust' is the wordplay.
'stories' becomes 'tales' ('tale' can be a synonym of 'story').
'about' is an insertion indicator.
'national trust' becomes 'nt'.
'tales' placed around 'nt' is 'TALENTS'.
(Other definitions for talents that I've seen before include "Skills" , "Natural aptitudes" , "Last ten (anag.)" , "Gifts, abilities" , "endowments" .)