You heard me right. According to the BBC, a plume of volcanic dust from an eruption in Iceland has blown into Scottish airspace, causing the cancellation of all flights to and from Scottish airports today. We actually have some friends stuck in Scandinavia and on the Continent because of it, and it's throwing a wrench into campaign plans for the upcoming general election (though in a country this small--is it really such a big deal to drive or take a train?).
Can't see anything obvious out the window here, but it's supposed to be a high-altitude problem, probably obscured by the lower clouds scudding through.