It's taken a while, but Sky has finally come through on its promise to add TV shows to its "Buy & Keep" service. Just like its film offering, anyone in the UK can pay a single price to get both a physical and digital version of a TV box set. The former is a DVD in the post, while the latter is served through the "digital Box Sets store" available on Sky+HD and Sky Q set-top boxes, as well as the Sky Store mobile app. If you're not with Sky, you can grab the digital versions through a Now TV, Roku or YouView box instead.