

The most significant, probably Hillsborough - massivley changed crowd safety and policing, which probaly wouldn't have come about so soon without such a tradgedy.
Steve Redgrave winning five gold medals in five olympics (I think he's the only olympian to achieve this).
We rock!![]()
As said, Hillsborough.
All others are just meh.
like 1971: Sixty-six die in Scottish football disaster
which happened a lot earlier than hillsborough
like 1971: Sixty-six die in Scottish football disaster
which happened a lot earlier than hillsborough