Chauvinist outside Foreign Office sees mythical primate (7)
I believe the answer is:
bigfoot
'mythical primate' is the definition.
The answer and definition can be both people as well as being singular nouns.
Maybe you can see a link between them that I can't see?
'chauvinist outside foreign office' is the wordplay.
'chauvinist' becomes 'bigot' (I can't justify this - if you can you should give a lot more credence to this answer).
'outside' means one lot of letters goes inside another.
'foreign office' becomes 'FO' (abbreviation).
'bigot' enclosing 'fo' is 'BIGFOOT'.
'sees' acts as a link.
Can you help me to learn more?
(Other definitions for bigfoot that I've seen before include "Supposed ape of northwest US" , "Supposed American ape" , "Fabled hairy primate" , "Supposed NW US ape-like creature" , "American 'apeman'" .)