London commuters are being warned of possible travel disruption on Monday morning as the first full week back in offices begins after the festive break.
Yellow weather warnings for snow and ice have been issued across all four UK nations, with the Met Office warning of longer journey times on roads and rail networks on Monday and Tuesday mornings. There is also an increased risk of slips and falls on pavements and cycle routes.
Parts of Scotland remain under a yellow snow and ice warning until the end of Tuesday.
While much of the UK is expected to see bright or sunny conditions during the day, light snow flurries could affect northern Scotland, west Wales and parts of eastern England.
London is set for a bitterly cold night with widespread frost and icy patches as temperatures are set to drop to -5C.
Conditions will remain dry overnight, forecasters say, though a few snow flurries cannot be ruled out.
The Met Office has said Monday will be cold but bright for much of the day, with sunshine and a chance of isolated snow flurries later in the day.
The capital could see a mix of rain and sleet from Tuesday, with brighter spells returning midweek.
Cold weather health alerts issued by the UK Health Security Agency remain in force across England until Friday.
The agency has warned that the prolonged cold spell could increase the risk of deaths, particularly among older people and those with underlying health conditions.
Officials expect a rise in deaths, particularly among those aged 65 and over or with health conditions, with impacts also possible on younger age groups.
Meanwhile, the British Heart Foundation said cold weather can present specific risks for people with heart conditions because the heart has to work harder, which can exacerbate existing health conditions.
Met Office Chief Meteorologist, Matthew Lehnert, said: “As we begin the first full working week of the year, we face a range of winter weather hazards with snow showers and ice.
“In the north of Scotland, snow showers are expected to become more frequent on Sunday night with some locations within the Amber warning areas seeing a further 20-30 cm accumulate by Monday morning.
“Elsewhere in the UK, snow showers, ice and frost are expected at times but milder air will make attempts to spread eastward from Tuesday. This will mean rain becomes more likely in the south, but there is also the possibility of more organised snow along the boundary of the mild and cold airmasses. Strong winds could also be a feature later in the week.”
