This action might not be possible to undo. Are you sure you want to continue?
The hooligans are also better organised, using technology such as mobile phones and the internet.
"I think there's been an increase in the amount of violence been used in the last couple of years," NCIS spokesman Mark Steels told BBC Radio Five Live.
"The problem of football hooliganism is moving well away from stadiums and sometimes it is well after football matches and that provides us with problems.
"We have a world-renowned football intelligence section and we've found that very important and it will be increasingly important.
"It is certainly nothing like those figures people talk about in the so-called dark days of the '70s when hundreds of people were fighting. They've become much more sophisticated and more like organised crime groups."
Steels insists the recent introduction of tougher legislation to prevent convicted hooligans attending matches is just a small step forward and the law must be used "more rigorously" if it is to be effective.
"We fought very hard after Euro 2000 for a change in the legislation.
"We were rather pleased to see a recent human rights challenge overturned in the European human rights court and we would like to see it more rigorously applied.
"If you have committed a football related offence you should be given a banning order unless it's explained why you should not have one."
Under last year's Football (Disorder) Act banning orders can be handed down for between two and 10 years, forcing convicted hooligans to surrender their passports for specific periods.
The legislation is designed to prevent known trouble-makers travelling abroad to follow football and is backed up by the threat of a six-month jail sentence or a #5,000 fine if it is disobeyed.
The report comes after police were attacked by a gang of Bristol City fans in an Oxford pub on Saturday night and comes on top of large-scale violence from Cardiff City fans prior to the Charity Shield on Sunday.
Yesterday, fears of violence between rival fans resulted in a ban being placed on visiting supporters for the games between Manchester City and Millwall.