Have confidence in NHS institution (5)

I believe the answer is:

trust

I believe this clue is a double definition.

'have confidence in' is the first definition.
(synonyms)

'nhs institution' is the second definition.
(the NHS is organised in trusts)

(Other definitions for trust that I've seen before include "Faith (in a business combination?)" , "Unit of NHS organisation" , "bank on" , "Confident expectation" , "assurance" .)

I've seen this clue in The Telegraph.

Want a hint initially instead of a full solution? Install my app