Met Office fog warning disrupts travel across London on Saturday
Yellow alert predicts visibility under 100 m; TfL keeps most services running while rail and road users are urged to take precautions
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The Met Office announced a yellow weather warning for fog across sections of England and Wales on Saturday, lasting until the morning of 29 July 2026, as reported by the Standard. The agency warned that visibility may drop below 100 m in the most affected areas. Residents in north London boroughs, including Barnet, were told they could experience slower journeys and possible disruptions to public transport.
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Transport for London confirmed that its bus network continued to run across the capital, and every Underground line remained in service except one. The Standard noted that the Bakerloo line was the sole line not operating, while the Overground had scheduled part closures. TfL said it was monitoring conditions and would adjust services if visibility worsened.
Very cold and foggy out at 4am, definitely the coldest morning of the year so far!
Emma Woolf, broadcaster
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National Rail urged weekend travellers to check their itineraries before setting off, particularly on routes that pass through outer boroughs where the fog is thickest, as reported by the Standard. The AA issued a safety notice for drivers in London, recommending reduced speeds and the strategic use of fog lights to cope with hazardous conditions.
Meteorologists expect the dense fog to clear gradually during Saturday morning, turning into mist and haze before lifting completely. A later evening fog may return in some southern parts of the capital, according to the Met Office. Residents are advised to stay updated through local news and transport operator alerts.
Questions this report answers
+What does the yellow fog warning mean for residents?
The warning indicates that visibility could drop below 100 m in the most affected areas until Sunday morning. Residents should expect slower travel times, possible delays to bus and train services, and should follow any advice from transport operators.
+Which Underground line is not running during the fog?
All London Underground lines remain in service except the Bakerloo line, which was suspended while the fog persisted. TfL confirmed this status on Saturday, as reported by the Standard.
+What advice has the AA given to drivers?
The AA told motorists to reduce speed and use fog lights while travelling through the capital during the warning period. The guidance aims to improve safety where visibility is severely limited, according to the Standard.
+How long will the fog warning stay in effect?
The yellow fog warning is set to remain in place until the morning of 29 July 2026. The Met Office expects the fog to lift gradually during Saturday morning, with a chance of evening mist returning later.
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