E4 is a digital television channel in the United Kingdom and Republic of Ireland, launched as a pay-TV companion to Channel 4 on 18 January 2001. The "E" stands for entertainment, and the channel is mainly aimed at the lucrative 15 - 35 age group. Programming includes US imports such as Friends, The O.C., Smallville, Veronica Mars, The Cleveland Show, Glee, The Sopranos, What About Brian?, Desperate Housewives, 90210, Gilmore Girls, One Tree Hill, Scrubs, and British shows such as Shameless, Hollyoaks, Skins, The Inbetweeners and Misfits.

Source: Wikipedia.org