A single vehicle crash caused by icy road conditions has led to the closure of the M1 in one direction, causing significant traffic chaos. The incident occurred after the UK experienced the 'worst snowfall in a decade', impacting travel and leaving 40,000 homes without power. Emergency crews and gritters were dispatched to the icy stretch between Junction 23 and Junction 22, but the adverse weather conditions caused a collision, prompting the road's closure. National Highways confirmed that the southbound carriageway was affected, and drivers are being advised to avoid the area. Diversions are in place, and road users are urged to follow the hollow circle symbol on road signs. The crash is part of a series of travel disruptions caused by Storm Goretti, with airports forced to shut and train services canceled. The Met Office has issued a slew of snow and ice warnings, covering most of Scotland, London, and the South East and North West of England. The South West, West Midlands, Yorkshire, and Wales are also impacted by the weather alerts. Warnings for ice have been issued due to partially melted snow refreezing alongside freezing fog and wintry showers. Brits are urged to take care on icy surfaces, especially on untreated roads, pavements, and cycle paths. This incident highlights the challenges faced by drivers during extreme weather conditions, and it's crucial to stay informed and plan journeys accordingly.