Conservative Brexiteer in chopper (7)
I believe the answer is:
cleaver
'chopper' is the definition.
(synonyms)
'conservative brexiteer' is the wordplay.
I cannot quite understand how this works, but
'conservative' could be 'c' (UK political abbreviation) and 'c' is located in the answer.
The remaining letters 'leaver' is a valid word which might be clued in a way I don't understand.
This may be the basis of clue (or it may be nonsense).
'in' is the link.
Can you help me to learn more?
(Other definitions for cleaver that I've seen before include "A butcher may use it" , "Butcher's chopper" , "dangerous object?" , "Butcher's knife" , "Meat axe" .)