Almost the entire country awoke on Monday to an eerie but beautiful blanketing of fog.
Unless you were in an airport that is, in which case it was just a nuisance as flights around the UK were grounded.
For the rest of us though, it was an opportunity for some fairly breathtaking pictures.
Incredible picture over foggy #London this morning taken by @AirForce_Carlpic.twitter.com/PkSWl7FODp
— Elliot Wagland (@elliotwagland) November 2, 2015
amazing picture of the fog this morning pic.twitter.com/xaeb76ZN0Z
— Tom Phillips (@flashboy) November 2, 2015
OK, those last two may not be real.
About 45 flights - 10% of departures from Heathrow Airport - were "pre-cancelled" on Monday as most of England and east Wales were issued a weather warning for fog.
Passengers encountered long delays on Sunday at Britain's busiest airport.