With wet surfaces following recent rain, and temperatures falling close to or below freezing, icy patches will be possible on untreated surfaces for a time on Sunday night into Monday morning. The extent of cloud cover across parts of Wales and central southern England is more uncertain, which will influence whether temperatures fall sufficiently low enough to allow ice to form. A few fog patches may pose an additional hazard. For further details see https://www.metoffice.gov.uk/weather/warnings-and-advice/uk-warnings