Perhaps those crop destructive extremely cold Arctic airmass blasts destroying oranges in Florida come from the State of Minnessota? (realclimate.org)
This system would be fairly unremarkable, bringing only light to moderate precipitation, if not for the very cold airmass in which it will be situated. (weatherwest.com)
My thought is that the UK's temperate climate is primarily due to SWly prevailing winds blowing from the relatively warm ocean, as opposed to places on the eastern side of a large continent which will frequently receive cold polar continental airmasses in winter, because the mid-latitude westerlies will be blowing from a cold continental interior. (realclimate.org)