Man meets British politician in plant that produces drug (4)
I believe the answer is:
hemp
'drug' is the definition.
(cannabis)
'man meets british politician' is the wordplay.
'man' becomes 'he' (he refers to a man).
'meets' is a charade indicator (letters next to each other).
'british politician' becomes 'MP' (Member of Parliament).
'he'+'mp'='HEMP'
'in plant that produces' is the link.
I am not very happy about this link. Some or all of it may be part of another bit of the clue.
Can you help me to learn more?
(Other definitions for hemp that I've seen before include "Cannabis sativa" , "Rope-making fibre" , "Plant fibre used to make rope" , "Marijuana" , "Narcotic drug" .)