[Technologist]

The extra Red button feeds were not in BBC leased transponders so what the BBC has done does not affect this
BTW BBC one south HD txp 24 12168 V is on Sky until the nightlight is turned off.

The reason that the feeds are over the internet is that everyone / more people can get them
And it probably is cheaper than DSAT as the deals done in the past promoted that platform, whose predominate owner is also going IP as they are a major domestic ISP.