Expect Theresa May to take this line too.
Fortunately for us in the UK, the government famously identified VoIP as being the technology used to bypass ISP blocking etc, so until they get that right, we are pretty safe...
Lord Blair said:
"All the different apps for phones mentioned by the noble Lord, Lord King, along with all the other services, are increasingly being used across the internet via something I now know more about than I ever wanted to – a system known as VoIP, the Voice over Internet protocol.
This makes all those transmissions untraceable. I will not specify them, but they are being used in methodologies that members of this House will be using most days."