Everyone's being warned to take extra care in the snow and ice after several accidents involving children.
In West Yorkshire, a six-year-old boy died after falling through the ice on a frozen fish pond, where he was playing with his 12-year-old brother.
Both were rushed to hospital, but the six-year-old later died. His brother is being treated for the effects of the cold water.
Elsewhere, three children were hurt in two separate sledging accidents.
A nine-year-old boy suffered back injuries when his sledge hit a boulder in Edgehill, in Warwickshire.
The emergency services say they want everyone to stay safe
And just five miles away, near Northend, two 13-year-old girls hurt their necks while sliding down a hillside on a rubber ring.
The accidents come after a week that's seen most of the UK gripped by a big freeze and blanketed in snow.
Emergency service workers say they don't want to spoil anyone's fun, but it's important to be extra careful and stay safe.
'No safe ice'
A spokesman for West Yorkshire Fire and Rescue said frozen water could be particularly dangerous.
"Ponds, rivers and canals are not playgrounds and even though the snow and icy conditions may look inviting to children, there is no such thing as safe ice," he said.
The latest accidents come just four days after 16-year-old Francesca Anobile died when the sledge she was on crashed in South Yorkshire.