Book about British accountant bored with the City (7)
I believe the answer is:
rebecca
'book' is the definition.
(Daphne du Maurier novel)
'about british accountant bored with the city' is the wordplay.
I cannot quite see how this works, but
'about' could be 're' ('re' means regarding or about) and 're' is found within the answer.
'british' could be 'b' (abbreviation e.g. in 'BBC') and 'b' is found in the answer.
'accountant' could be 'ca' (abbreviation for chartered accountant) and 'ca' is present in the answer.
'city' could be 'ec' (the City of London postcode) and 'ec' is present in the answer.
No letters remain.
This explanation may well be incorrect...
Can you help me to learn more?
(Other definitions for rebecca that I've seen before include "Maxim she betrayed" , "Literary heroine" , "also Isaac" , "Isaac's wife" , "The first Mrs de Winter (Du Maurier)" .)