In December of that year the first streaming version of iPlayer was released. For a whole variety of reasons the “iPlayer inside” (/programmes) model never came about and instead iPlayer became a destination in its own right. But both iPlayer and /programmes were based on PIPs and both use PIDs in their URLs:

http://www.bbc.co.uk/iplayer/episode/b04dzswb/the-kate-bush-story-running-up-that-hill

http://www.bbc.co.uk/programmes/b04dzswb

So while we got to one-thing-per-page we never quite got to one-page-per-thing. Though it’s worth pointing out that iPlayer episode (sometimes called item) pages only exist while an episode is available (or due to be available shortly). Once the catch-up availability window closes the iPlayer page redirects to the /programmes page. Although since the episode might be repeated and consequently the availability window might reopen this redirect is a 302 (temporary) rather than a 301 (permanent).