Investment fund not suitable when France lost confidence (4,5)
I believe the answer is:
unit trust
'investment fund' is the definition.
(I've seen this before)
'lost confidence' is the wordplay.
'lost' becomes 'unit' (I can't explain this - if you can you should believe this answer much more).
'confidence' becomes 'trust' ('trust' can be a synonym of 'confidence').
'unit'+'trust'='UNIT TRUST'
'not suitable when france' acts as a link.
I am not very happy about this link. Some or all of it may belong to another bit of the clue.
Can you help me to learn more?
(Other definitions for unit trust that I've seen before include "Investment package" , "Investment system" , "Investment fund" , "Type of investment" , "Multiple investment scheme" .)