English football has been transformed in 20 years since Hillsborough tragedy . Some clubs raised more cash by floating on stock markets and others , such as Bolton , Middlesbrough and Sunderland , invested in shiny flying saucer-like new stadiums . Disaster created impetus for all-seater grounds , improvements in infrastructure . Top clubs also benefited from creation of Premier League and sale of TV rights . Comment:
English football has been transformed in 20 years since Hillsborough tragedy . Disaster created impetus for all-seater grounds , improvements in infrastructure . Top clubs also benefited from creation of Premier League and sale of TV rights . Comment: