Don't forget that universities were one of the main drivers of increased rates in Spet/Oct and they will all be back mid Jan too having travelled far and wide before retuning to hmos and halls...
This return is being staggered over 5 weeks this time around, and most universities are doing mass testing before they leave, and mass testing when they arrive back, so we are not the source of the problem in our local area, according to public health. The university in some ways is reasonably easy to contain, all our students went into lockdown before everyone else, no household mixing all term, and rates have dropped dramatically now. So, there's no reason to think these students are still the source of all the problems, I think it's schoolchildren in schools without social distancing/parents interacting and working in the communities, and still hospitals/care homes, that are the places which are most risky.