Information on update: The warning area has been adjusted to focus on southeast and parts of central England. Fog patches will affect parts of central and southeast England on Thursday morning. Some areas will not see fog, but where it does form it may be dense in places with visibility below 100 metres, leading to difficult travel conditions. Fog will slowly clear from the west after dawn but may linger until mid morning in the east of the warning area. For further details see https://www.metoffice.gov.uk/weather/warnings-and-advice/uk-warnings