I am talking post digitizing and " the negative affects of ALL potential sources of electrical-based noise, including routers, switches, transformers, and power supplies " before it gets to my house.
In my view (I know others disagree) there is nothing that can be going on in that BBC studio as a result of electrical-based noise that's going to pose a negative impact on the digital signal coming into your house. The digital signal is just fine leaving BBC and just fine when it arrives to your home and even your DAC. I'm simply saying whether it's a nearby TV, florescent light, network switch, router, or amplifier...everything near your audio system that is powered by electricity has the potential to cause noise. Reducing these effects can be beneficial.
Again, I am not in the camp that any of this is related to the digital signal. I had to move my router 10 feet away from my rack because initially it's close proximity to the rest of my gear was causing very loud "motorboating". In this case the digital signal was of course not degraded bu there was incredible noise coming through my speakers due to the RF/EM noise. This really shouldn't be confusing.