I swear that what follows is true.
I went on many field deployments with the Met. wagon. Most of these were joint NATO, or AFCENT or Northag. I was also UK TACEVAL rep. shafting NATO bases for three years.
I was constantly asked "how do you guys do that?" by Americans, Canadians, Germans, Italians and Danes. "That" was ordinary workaday forecasts of night minimum temperature, day max, fog formation, rain timing, bread and butter stuff.
We were NOT asked by the Belgians or the Dutch. Why not?
The latter two sent their some of field forecasters to the Met Office College to train, where they learned not to rely on crude computer predictions orginating in the USA or indeed anywhere else.
To this day the UK computer is a tool, and not an oracle, for the guidance of the wise, not the obedience of fools. As each model improves on its predecessor, so the fools can slowly take over of course.