I have one .. I think it is a non regulated ESOL aim but I haven’t yet had chance to look into it properly .. As a rule any non regulated aims would not be flagged as core aims but i did have one ESOL student who was only with us for a really short time and was purely on non regulated aims so I think it was him !!
If I have the time to look in more detail I will come back to you with a definitive answer but I think in our case that was what it was !!