Freezing Weather!

This has got to be the coldest day since I moved here 7 years ago. There was ice on the swimming pool all day.  The swimming pool is empty by the way, has been for 5 years, but there is about a foot of rainwater at the bottom.
Inside my living room is at 5 degrees C - the fire is broken just now.
Guess I'll have lost a few plants in the garden. They are just not used to getting it this cold. Brrrrr!