Talking Pictures TV started on Sky in May 2015, and eventually spread to other providers. It must be noted that Freeview channel 81 can only be viewed on an HD receiver, it will not work on normal Freeview receivers. But, it is not transmitted in HD!
It appears that they may be owned by Renown Films.
My hard drive is full of nostalgia, most films are vintage B features, but quite a few are from the A feature category.
http://talkingpicturestv.co.uk/