This is the building where I had the first AstraZeneca Covid-19 vaccine shot.
Not sure whose coat of arms it is; it's not Clifton College's. The motto, Nemo Sibi Nascitur, means "No one is born unto himself". This grand building isn't actually listed—well, it's on the local list, but that doesn't tell you much—and I can't see much in the way of information about it from a quick squint around the web.
GPS Coordinates:
51.46471, -2.62096
Location: Clifton