Chadwick Tower is where the Computer Science department was based at the time, so I was in there most days. It's pretty much opposite the Cathedral in question, with unobstructed line of sight. Building 207 on this map: https://www.liverpool.ac.uk/files/docs/maps/liverpool-univer...
I still use physics as I'm a game developer, it's just that I stopped studying it actively, and instead focused on my computer science degree. Not to worry, I've done OK!