http://www.homeoffice.gov.uk/media-cent ... ll-arrests
The quick version...
The number of arrests at English and Welsh football matches (domestic and international) has continued to fall, this year by 10% (approx. 400 less arrests).
There were no English fans arrested in South Africa this year, compared to the 900 who were arrested in Belgium in Euro 2000 on one night. The police have done loads of work on this and apparently its working very well.