A power cut plunged central London into darkness for several hours on one of the busiest shopping days of the year.
The cut hit the capital's entertainment district, which was packed full of tourists, Black Friday shoppers and people out to enjoy the nightlife.
The West End's famous billboards also went out, with rush hour commuters as well as office workers left in darkness.
UK Power Networks - who own and maintain electricity cables in the capital - said engineers were able to get power to some areas after re-routing around the fault, before confirming all the power had been restored shortly before 9pm.
Earlier on Friday evening, theatre-goers were told the West End performance of Aladdin the Musical, due to be performed at the Prince Edward Theatre, was to be cancelled because of the outage.
A spokesman for the show said: "Tickets will be refunded. Please refer to your original point of purchase for full details."
Jersey Boys, Thriller Live, The Curious Incident Of The Dog In The Night-time and Les Miserables were also cancelled.
Transport for London said the Tube network was not affected by the power outage, however travellers were held at Tottenham Court Road and Oxford Street station to prevent overcrowding.
Many people at the scene began posting messages and images on social media showing darkened streets.
The blackout was caused by a fault in the electricity network and came at around 5.15pm.
Both Scotland Yard and the London Fire Bridge said they were "aware" of the power cut but had not been called out to any particular incidents.