Financial office compassionate about the French royal family? (8,5)
I believe the answer is:
clearing house
'financial office' is the definition.
(type of financial establishment)
'compassionate about the french royal family?' is the wordplay.
'compassionate' becomes 'caring' (to be compassionate is to care).
'about' is an insertion indicator.
'the french' becomes 'le' ('the' in French).
'royal family?' becomes 'house' (I've seen this in another clue).
'caring' enclosing 'le' is 'clearing'.
'clearing'+'house'='CLEARING HOUSE'
(Other definitions for clearing house that I've seen before include "Financial agency" , "Financial institution" , "Central collection place for financial transactions" , "Banking establishment" , "preparing to move to another building?" .)