In court, rate film “superior” (8)
I believe the answer is:
upmarket
'superior' is the definition.
(I've seen this before)
'in court rate film' is the wordplay.
'in court' becomes 'up' (up before a judge).
'rate film' becomes 'market' (I can't explain this - if you can you should give a lot more credence to this answer).
'up'+'market'='UPMARKET'
Can you help me to learn more?
(Other definitions for upmarket that I've seen before include "high quality" , "For the better off" , "for wealthy consumers" , "Aimed at those with money" , "Superior" .)