Mist and fog developing in the UK overnight

Do you know where your fog light switch is?

Mist and fog developing in places tonight - the fog extensive and dense in many southern, eastern and central counties tomorrow morning to mean poor visibility for rush hour.

The mist and fog will be slow to lift - leaving many areas with a grey day. Rain will sweep in from the south-west to affect many locations but eastern counties will get away with a drier day.