Michael Dukes, director of forecasting at MeteoGroup said the cold snap was due to remain for "some time yet".
There has been a band of sleet and snow moving through parts of the east Midlands, east England and south east England late in the night, towards morning.
It has produced only one or two centimetres in places, it is not very much. Most of the snow has been on higher ground but there has been a little bit of snow on lower ground as well.
More top news
Launching Plaid Cymru's campaign, leader Leanne Wood, says the general election offers Wales an "unprecedented opportunity" for change.
A woman who sent £1,000 to her jihadi boyfriend in Syria before he dumped her has avoided a prison sentence today
Ed Miliband has launched Labour's General Election campaign with the promise of a "double lock" to safeguard the future of the NHS.