A number of boroughs in London experienced power cuts on the morning of 7 January. The first of the blackouts is believed to have started at 6am in East Dulwich, with outages then reported near Ilford, Southwark, Harringay, and Wimbledon.
Click here to check if your post code has been affected by blackouts.
UK Power Networks, which maintains electricity cables across London, cited "a fault on a piece of electrical equipment" as the reason for some of the blackouts. No further details have been provided on the issue.
The electricity company's website estimates different timings for power to be restored in affected areas, ranging from 9am to 12pm on 7 January. Customers are being urged to report any power outages to their providers.
Once UK Power Networks has been alerted of an outage, they will attempt to remedy it remotely. Failing that, engineers will travel to the location to investigate the situation.
A statement on UK Power Network's website reads: "Our automatic alarm systems usually alert us of any large power outages. With smaller power outages, however, we rely on customers telling us."
One of the worst affected areas is believed to be Chiswick, West London, where a number of people have been posting comments on social media about the power outage. Scottish and Southern Energy confirmed the situation on social media, noting that power was expected to be restored by 11.30am.