The Met Office has warned up to 10cm of snow may accumulate in the worst affected areas. An amber cold health alert has also been issued, with the potential for "significant impacts" including "a rise in deaths".

Wintry conditions across the UK have caused widespread travel disruption and forced more than 200 schools to close - with forecasters warning more snow and ice are on the way. Snow left one road impassable and there were collisions on two other roads, with schools across mid, north-east and south-east Wales shut on Tuesday.

Snow started falling across parts of the UK on Monday night in what the Met Office called the country's "first taste of winter". Traffic Wales also reported crashes on snowy roads causing a closure on the A55 eastbound at Caerwys in Flintshire. The A483 southbound between Rossett and Gresford in Wrexham county was also shut after a collision. Transport for Wales said 13% of its services have been disrupted due to severe weather.

Met Office chief meteorologist Neil Armstrong said: "With cold Arctic air firmly in place over the UK, continued winter hazards are likely through much of this week, with further updates to warnings likely in the coming days." The current focus for upcoming snow and ice risk is from later on Tuesday and overnight into Wednesday, with snow showers likely moving in off windward coasts in the north and east, as well as drifting into parts of Northern Ireland and Wales. "In excess of 10cm of snow is possible over higher ground within the warning areas, with 1-2cm possibly settling at lower levels, which has the potential to lead to some travel disruption. Ice is an additional hazard and is likely to form quickly on untreated surfaces."

Monday night saw sub-zero temperatures for much of the UK, reaching as low as -11.2C at Braemar in Aberdeenshire. Snowfall was also widely reported, with 12cm of lying snow recorded at Watnall in Nottinghamshire on Tuesday morning. Experts suggest that this early cold snap may be a sign of a harsher winter to come, with further cold weather expected in the coming weeks. The public is urged to stay informed through weather updates and to prepare for any future disruptions.