Warnings for ice and snow across the country will continue in to Tuesday after temperatures plunged on Sunday night, triggering an alert from the UK Health Security Agency.
Forecasters warn that temperatures could be colder than on Monday, where a low of -9.1C was recorded in Dalwhinnie in central Scotland. It was well below freezing in Edinburgh and Belfast, with temperatures of -4.1C and -2.5C respectively, while London and Cardiff enjoyed milder nights.
