That is the more difficult question. You could argue with Hyperoptic that it is a service which they should provide, as other ISPs do. Apparently it is not very popular! I don't think you can get a cheap box to put in the path to your router, and even then you would also need physical security to stop the box from being bypassed.
In the days before modern technology. I do recall people at school drawing their own, not that , at the time, I really understood why they were doing it.