Re: Tesco Does Not Know More About Me
"at least as much as Tesco as they can bulk purchase data from the same commercial sources as supermarkets do, and then add their drag-net surveillance to that"
Well they can order Tesco to provide everything they know, and then add everything your bank knows and then add everything your ISP knows and then add everything your doctor knows.
So I think GCHQ certainly do know more than Tesco.