Cops tricked individual supplying class A drug (9)
I believe the answer is:
methadone
'a drug' is the definition.
(methadone is a kind of drug)
'cops tricked individual supplying class' is the wordplay.
I cannot quite see how this works, but
'tricked' could be 'hadon' (I've seen this before) and 'hadon' is present in the answer.
The remaining letters 'mete' is a valid word which might be clued in a way I don't see.
This may be the basis of clue (or it may be nonsense).
Can you help me to learn more?
(Other definitions for methadone that I've seen before include "Drug used in treating heroin addiction" , "Narcotic analgesic drug" , "Synthetic drug taken to replace heroin" , "Synthetic analgesic" .)