Officers at first lie badly, bent in court (3,6)
I believe the answer is:
old bailey
'court' is the definition.
(famous English courthouse)
'officers at first lie badly bent' is the wordplay.
'at first' indicates taking the first letters.
'bent' is an anagram indicator.
The first letter of 'officers' is 'o'.
'lie'+'badly'='liebadly'
'liebadly' is an anagram of 'ldbailey'.
'o'+'ldbailey'='OLD BAILEY'
'in' is the link.
(Other definitions for old bailey that I've seen before include "suitable for trial in London" , "London's Central Criminal Court" , "Courts" , "Central Criminal Court in London" .)