I had experiences in the late 90s of being on overfull terraces - at Oxford and Blackpool - which were terrifying, even if only momentarily. They were old terraces, completely obsolete in design, being managed poorly on the day for larger than expected numbers of supporters. I'm pretty much convinced that Oxford lied about the numbers inside the terrace that day, not so much to avoid tax but to avoid repercussions for breaching their safety certificate. The fact that these things still went on, albeit less frequently than before, 10 years after Hillsborough was depressing tbh