IFR traffic once you accept a visual only has to be passed traffic. And when your talking to tower its the same. Its pilots not knowing the rules which creates the problems. Your on your tod once your start speaking to twr.
I had told the twr that they were first solo and I did speak to the SATCO afterwards who came over and apologised to the student. Although to be honest that particular student was a gliding conversion so if it had to be anyone I was glad it was him.