Carry On performers perhaps appearing in court (3,2)
I believe the answer is:
act up
'carry on' is the definition.
(I've seen this before)
'performers perhaps appearing in court' is the wordplay.
I cannot really see how this works, but
'performers' could be 'act' (eg a double act) and 'act' is found in the answer.
'in court' could be 'up' (up before a judge) and 'up' is located in the answer.
No letters remain.
This may be the basis of the clue (or it may be nonsense).
Can you help me to learn more?
(Other definitions for act up that I've seen before include "Behave like a brat" , "Misbehave - carry on" , "malfunction" , "take part in heightened drama?" , "Behave badly (colloq.)" .)