BBC Worldwide, the commercial arm of the British Broadcasting Corporation, announced earlier today that it would begin selling episodes of some of its popular television programming via the Apple iTunes Music Store. The BBC says it is the first UK television network to offer its shows on iTunes. Episodes of such programs as Torchwood and Little Britain will retail for £1.89 , or about $3.68 US.

Recently-aired episodes will appear on iTunes after they have been made available for viewing on the BBC’s free iPlayer “catch-up service.” The iPlayer is proving extremely popular with viewers, with more than 3.5 million shows streamed or downloaded in the first two weeks after its late December debut.

This is an interesting move for BBC, but the announcement highlights that the size of Apple TV’s hard drive may prove to be a roadblock to people wanting to create digital media libraries.