[London Lite]

There is one show that went out in HD after I compared HD/SD with the Weakest Link.

The Chase. I casted from my Samsung Phone to the Nvidia Shield and then used the Sky Stream Puck. Full HD on Samsung TV Plus, downscaled on Sky Stream.

So at the moment, the only outlet that has Challenge in HD is Samsung TV Plus, but it's so much easier to watch Challenge on Sky Stream unless you have a Samsung Smart TV. Incidentally there were ads on Samsung TV Plus rather than the holding caption shown earlier in the thread.