In this freezing whether don't forget our native birds and visitors who are trying to survive.
There may be no fresh water available for them, and other sources of food may be covered. Put some water out and some food. It can be prepared birds seeds or fat balls, but maybe you have nuts left over from Christmas, or fruit that no-ones going to eat, or even some old bran flakes, which, lets face it, you're really not going to eat, are you?
Have a llok here if you want to know more
http://www.rspb.org.uk/news/details.asp?id=tcm:9-238241