As the 2020 ADS-B mandate pumpkin looms on the horizon, say this is about the system: Once you've ponied up for the installation cost, it does provide free weather and traffic. But in Europe and the UK, no deal. And a recent experiment to see if pilots across the pond would pay for these services produced an unsurprising result. They won't.
This is a companion discussion topic for the original entry at https://www.avweb.com/avionics/aero-u-k-pilots-like-fis-b-weather-but-not-if-they-have-to-pay