Here's a weird thing that I always remember when I spot the endoscopy centre: in January 2019 there was a "Major emergency response after incident in city centre", where "Six taken ill after mystery substance is hurled from window near Harbourside".
As far as I know, the Bristol Post—who back then were basically just a Twitter aggregation service rather than an actual newspaper—never did any follow-up stories on what the substance was, or what on earth this was all about, but I do know the window that they mystery substance was hurled out of (or possibly into, the story's a little self-contradictory on that point) was a window of the Prime Endoscopy centre. The mind boggles.
GPS Coordinates:
51.44970, -2.60330
Location: Canon's Marsh