They hunt in packs, fuelled by cocaine, hooked on violence and occasionally wielding chains. Some are as old as 65. They use mobile phones and the internet to arrange showdowns with rival "firms" at agreed locations away from prying CCTV cameras and police surveillance. This is the profile of the 21st-century football hooligan, a breed of "fan" who, although decreasing in numbers and visibility, is recognised by the football authorities and police as never having gone away.Less than a fortnight ago, Danny Scriven, a 26-year-old postman, and 21-year-old Kali Hagenstede – two members of the Tottenham firm the Yid Army – were jailed for 15 months and given six-year banning orders (keeping them away from football matches) for being part of a 20-strong mob that smashed up The George, a pub in Holloway used by Arsenal's firm the Herd, after Spurs lost the north London derby last October. Last Wednesday, 19-year-old Callum Ellis was given a maximum five-year banning order by Leeds magistrates for being the leader of a group of Bradford City hooligans who call themselves the Young Bradford Ointment. There has been a worrying series of violent, football-related incidents in the past three months.