Research on the subject of football violence (hooliganism) is expansive. There are many specific organisations based in the UK that look at this subject, most take in issues other than hooliganism but subjects that can also be seen as quasi-related, such as media amplification/sensationalism, racism, theories, glamorisation etc.
These organisations include the Football Research Organisation UK (FROUK) which is affiliated to the Applied Criminology Group (University of Huddersfield), Sir Norman Chester Centre for Football Research (SNCCFR) (University of Leicester), Social Issues Research Centre (SIRC) also at the University of Leicester, the Football Industry Group (FIG) at the University of Liverpool.
Arguably, these organisations are the main organisations in the UK conducting research and represented by some of the leading researchers in this subject in the world.
Go on these sites and visit the areas of your interest, as mentioned above. This site (FROUK) has links and information on all aspects of football related interests.
I believe that we should all work together on this subject, but I can not speak for the other organisations. Many people have a specific theoretical stance on this subject and this can cause conflict with other's opinions. I believe that each event, with cultural, political and environmental changes, requires a specific theoretical stance. That also requires flexibilty and that is what FROUK is all about. The concept of this organisation is to move forward with change, not to devalue what others have done, but to enquire with an open mind and speak with strength on the knowledge we gain. The World Cup in Japan and Korea 2002, has proved the above points. Look out for our research into this event that will be published here soon.