Dense fog threatens Monday morning rush-hour disruption

The Met Office has issued a yellow warning for dense fog across much of England and eastern Wales, running from 6pm on Sunday until 11am on Monday.

The warning covers the Midlands, East Anglia, south-east and central southern England, north-west England, Yorkshire and the Humber, parts of south-west England and eastern Wales.

London, Birmingham, Cardiff and Greater Manchester are among the areas affected.

Visibility could fall below 50 metres in places, making driving difficult. Bus, train, ferry and flight services could also face delays or cancellations.

Fog will gradually lift through Monday morning, although some patches could linger into the afternoon.

Commuters can also expect a chilly start, with temperatures widely falling into low single figures and ground frost likely in many areas.

Fog will be more widespread than last night as clearer skies across England and Wales allow heat to escape more quickly, causing temperatures to fall.

Patchy fog could also develop outside the warning area in northern parts of the UK wherever skies remain clear for long enough.

Fog forms when air cools and water vapour condenses into tiny droplets suspended near the ground, creating cloud at ground level.

Mist forms in the same way but is less dense, with visibility generally greater than 1,000 metres (1km).