Tiscali and the BPI have had a falling-out about the cost of dealing with file-sharers:

www.pcpro.co.uk/news/168183/tiscali-expe...ter-bpi-tip-off.html

"Discouraging customers from using their accounts unlawfully is an obligation that any ISP should bear as part of its core business," its spokesman adds. "That is the socially responsible thing to do, and it's disappointing if Tiscali sees illegal behaviour on its network as a further opportunity to make money at the expense of the music community."

If ISPs cannot reach an agreement with the BPI, then the government has confirmed that it will attempt to introduce legislation compelling service providers to act against alleged sharers.