Much of the UK including London is expecting snow and ice on Monday after being hit by storms throughout Christmas.
The Met Office has put in place yellow weather warnings for snow and ice across Northern Ireland, most of Scotland and much of Wales.
A warning is also in place for snow and ice for England from the north-west down through the Midlands and across to Taunton in the west and London in the east.
Londoners are likely to wake up to temperatures of zero degrees Celsius (32F), with a maximum of just 5C (41F), while the mercury is expected to reach the same high in Cardiff.
The forecasting department said the rain moving across Wales and England in the early hours of Monday has the potential to turn to snow.