There’s an article on Underworld at the Independent:

Having opted not to renew their contract with V2 Records, they began collaborating on PowerBooks. With a studio on their laps, effectively, they had no one to answer to but each other. Simultaneously, after standing in for John Peel on his radio show in 2003, they began spontaneous webcasts (from a pig shed, oddly enough) that renewed their enthusiasm for making and distributing music. “With webcams and webcasts, it’s like you can be on stage from your home,” Hyde gushes. “Rick was digging out old unreleased, unfinished Underworld material and just giving it away. Such a great buzz.”

The complete article gives a short history of Underworld, but mainly focuses on what they are up to now.