DAB doesn't snoop on you or use up your download quota.
Satellite radio is better: FIP, RTL2 and VRT2 are all good and each region of Germany has at least 3 stations.
You can't have it both ways. It's either home broadband equipment or a trivial amount of data. If using a basic smartphone deal to listen, you could use up the data allowance in a day or two.Internet radio uses a trivial amount of data when compared to typical home broadband allowances. A typical 128 kbps stream uses about 50 MB per hour. Internet radio allows you to listen to vastly more stations around the world including almost any station in the UK. No special equipment is required to listen to internet radio. A basic smartphone or tablet will suffice.
Or a USALS motor. But it's worth doing. Others above have pointed out how poor UK radio is at the moment, but even it runs at 160kbps (Global) to 192kbps (BBC) on satellite, while some 19.2e radio stations broadcast at over 300kbps. Better audio quality, no snooping, for a one-off setup cost that has other benefits (like wider TV channel choice, not only the blinkered British). If you like listening to the radio, I think it's worth it.To pick up those stations mentioned, you need to direct your dish at 19.2 degrees east, which is inconvenient for most UK residents as most people in the UK have the dish pointed at 28.2 degrees east. So you either need a second dish or install a dual LNB.
You can't have it both ways. It's either home broadband equipment or a trivial amount of data. If using a basic smartphone deal to listen, you could use up the data allowance in a day or two.