They do detailed scoring of their predictions and it's based on rigorous physical modeling (navier stokes) so they know that it's better than chance. FA hasn't held up well to such scrutiny.
Sadly it would never work for the British Isles, that much I can guarantee you. Our weather resists all forms of prediction found to be reliable elsewhere, and I doubt AI enhancements over the next few years will make much of a dent in the problem.
I’ve tried all manner of weather services and none of them really do a really good job of any level of forecasting. They do however excel at supplying me with information I can get just by looking out the window.
They do detailed scoring of their predictions and it's based on rigorous physical modeling (navier stokes) so they know that it's better than chance. FA hasn't held up well to such scrutiny.