Villas North Stand must be high up the list.
I struggle to believe its passed all the safety certificates. If there was a fire in the lower levels yesterday I have no idea how theyd expect to get 4,000 fans out in a safe timely manner. And thats with 5 rows at the front covered up. For a regular league game Villa must have an extra ~600 fans in the stand.
The crush in the concourse at HT was shocking, Im a fairly fit young man and was still struggling to move. I cant imagine how it was for any older fans or kids.
The upper tier at Loftus Road is also pretty tight but probably only holds about a quarter the number of fans. Honorable mention to Gillinghams 20+ year old temporary open air stand too.