It comes after a night which was expected to be the coldest of the year, as parts of Britain were hit by Arctic air. Some delays and cancellations to rail and air travel are likely, ' the Met Office said.
Northern England is expected to be hit by the worst of the snowfall, with nearly 6in possible on high ground.
"Icy patches are expected to form for a time on Friday morning as a band of rain, sleet and snow pushes northeastwards across parts of England".
The Met Office has issued an amber warning for snow in North West England, Yorkshire and the Humber and the East Midlands, with up to 15cm set to fall on higher ground.
But Ms Maxey warned the country could see the "coldest night of the year so far" before the snow blankets parts of the country.
The warning comes after temperatures fell to as low as minus 4.5C (24F) in County Down, Northern Ireland, while most parts of the United Kingdom hovered around OC.
Northern Ireland also has a country-wide yellow warning for ice and snow from midnight until 9am.
The RAC said ice had caused an "incredibly busy" morning, and they dealt with a number of battery failures, minor bumps and shunts, and skidding.
A number of roads proved hard this morning with black ice, resulting in warnings from police and a number of accidents.
Passengers at Stansted Airport have told of their "nightmare" after snow and ice forced dozens of Ryanair and easyJet flights to be cancelled or delayed.
A three-car crash on the M1 is expected to cause delays on the southbound stretch of the road.
The airport returned to normal by mid-Thursday morning, but many passengers whose flights were cancelled on Wednesday remained in the terminal.
"It does look like there are a few delays to some flights, but we are open, operational - nothing out of the ordinary", he said, adding that passengers should still check with their airlines.
Heavy snow also caused disruption on the roads.