As stuartrogerson rightly points out, you can get these on a NowTV or Roku box, which also includes streaming the films that are currently being broadcast.
Also you can watch NowTV officially on multiple devices, which you can't with BT Youview
Can't see them offereing them for free can you? I also can't see Sky letting them have them without conditions on how much they charge for them.
Perhaps Sky will give them customs feeds of the channels with special ads packed full of "Join Sky and get these films in HD" adverts
You can always play the same games that Sky and others do -- ie announce a standard price - yet offer bundles and promotions that effectively discount the price
Or you could buy a NowTV box from a well-known catalogue retailer on the high street for just £25 including 3 months movies subs
Sky movies channels now showing up on the BT TV Guide listings page http://home.bt.com/entertainment/tv/tv-guide-01363796671705
Unless they are going to offer this for the same price or less as NowTv though, I can't understand why anyone would take this.
With only a few days to go before "launch" of Sky Movies on the BT YV box, has anyone seen the official price or option to add to your current TV package?