Unless you’re likely to be seen by people you know on campus outside of termtime, you’re probably in the clear. Of course, the temptation will be to commute in from home (and that’ll save you a fortune, too, as you won’t be paying for the accommodation), but you might have to do more “sneaking.” Perhaps you could come along just for the Friday (£12): should be easy enough to excuse yourself from the family and anybody else for a day without excess suspicion?