The most common and most likely answer to this crossword clue is the 8 plus 5 letter word NATIONAL TRUST
I've seen this crossword clue in The Daily Telegraph
N
A
T
I
O
N
A
L
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T
More clues leading to the result NATIONAL TRUST
- Guardian for one needing to rely on charity
- Citizen with confidence in charitable organisation
- Conservationists with the confidence of the country?
- Citizen bound to be heard in charitable organisation
- Who’ll save a great pile taint loan administered with corruption
- Preserving organisation in part of Bible? Initially it could be
- Naturalist not working for heritage organisation
- Heritage organisation found in New Testament, originally?
- Conservationists in state bound to be heard
Buddy explains!

The cryptic/wordplay part
In cryptic crossword there's often an wordplay/cryptic part as well.This part involves a more complex hint, such as an anagram, homophone, hidden word, etc.
Sadly, We don't have an explanation for this specific crossword clue yet.