Problem-solving husband with foreign coins in London area (15)
I believe the answer is:
troubleshooting
'problem-solving' is the definition.
'husband with foreign coins in london area' is the wordplay.
'husband' becomes 'h'.
'with' is a charade indicator (letters next to each other).
'foreign coins' becomes 'roubles'.
'in' is an insertion indicator.
'london area' becomes 'tooting'.
'h' after 'roubles' is 'roublesh'.
'roublesh' inserted into 'tooting' is 'TROUBLESHOOTING'.
(Other definitions for troubleshooting that I've seen before include "sorting out problem" , "Sorting out business" , "Tracing and correcting faults" , "Identification of problem" , "Problem solving" .)