A range of keyhole surgeries perhaps illegally committed by those working on the premises (6,4)
I believe the answer is:
inside jobs
'a range of keyhole surgeries perhaps illegally committed' is the definition.
I don't know anything about this answer so I cannot tell whether it can be defined by this definition.
'by those working on the premises' is the wordplay.
I cannot really see how this works, but
'by' could be 'side' ('side' can be a synonym of 'by') and 'side' is found within the answer.
This may be the basis of clue (or it may be nonsense).
Can you help me to learn more?
(Another definition for inside jobs that I've seen is " Crimes committed with collusion".)