Heathrow bosses are defending their response to a fire that shut down Europe’s busiest air hub for almost a day

The airport is now fully operational after the fire started at an electrical substation.

London Heathrow Airport announced its reopening on Friday after a fire caused a significant power outage. The incident is under investigation by the Metropolitan Police's Counter Terrorism Command.

A fire at an electrical substation near London's Heathrow Airport temporarily closed one of the world's busiest airports.

Officials are working to establish the cause of the fire, which remains under investigation.

Heathrow Airport is expected to be closed until 11:59 p.m. local time on Friday night. ABC News’ Marcus Moore reports.

Kate Middleton embraces another cancer patient in her first photo back at work after her own cancer diagnosis and public announcement in March.

Oasis, led by brothers Liam and Noel Gallagher, who found international success in the ‘90s for hits like "Wonderwall" and "Champagne Supernova," have reunited for a comeback tour.

More than 125 firefighters battled the blaze at the centuries-old Somerset House for several hours. The building houses priceless works by Monet and Van Gogh.

Authorities launched an urgent manhunt to arrest Kyle Clifford, calling the murders a "targeted incident."

On the Fourth of July, Americans across the country will be taking much of the day to relax and take a break with family. But in the UK it's Election Day.

The panel discusses what the city did to welcome the megastar for her run of shows in London.

A corpse flower, one of the world's rarest and smelliest plants, bloomed at London's Kew Gardens on Tuesday.

The actor is "in good spirits" after a fall during a performance of "The Player Kings," a Noël Coward Theatre spokesperson says.

Activists with Animal Rising said they "redecorated" the painting on Tuesday.

Harry is in London to mark the 10th anniversary of the Invictus Games.

A man has been arrested after driving a car into a home in east London before getting out and attacking members of the public with a sword, according to police.

Four horses -- and at least one of them soaked in blood -- caused chaos across central London on Wednesday morning after breaking free in Westminster, officials said.

Several people were injured when a group of military horses managed to run loose through the center of London, England.

Police in the UK are investigating a 'corrosive substance' attack that injured nine victims in London on Wednesday.

Police are investigating the "corrosive substance" attack in south London.

Footage from passersby shows flames leaping from the rear of an electric double-decker bus that caught fire in south London.

A suspect is in custody after a London stop sign that apparently featured the work of elusive street artist Banksy was removed on Friday, police said.

Sabrina Bahsoon, aka Tube Girl, has taken her social media presence from London trains to the catwalks of Paris Fashion Week.

Sadiq Khan, the mayor of London, discusses the U.N. General Assembly where he will speak about climate change.

Items for sale include handwritten "Bohemian Rhapsody" lyrics and more.

ABC News' Linsey Davis spoke to Mary McCartney, director of "If These Walls Could Sing," unpacking her personal ties and the 90-year history of the legendary studio

A million people are expected to crowd around the funeral for Queen Elizabeth II on Monday. Authorities are preparing for everything from pickpocketing to protests and terror threats.

A look at the numbers behind Great Britain's new Prime Minister Liz Truss, who became the third woman to take the role in British history.

Kate Andrews, economics editor at British magazine “The Spectator,” discusses challenges ahead for new Prime Minister Liz Truss, who is replacing Boris Johnson.

National Geographic’s upcoming issue, Mystery of Stonehenge, reveals the latest findings and includes never before seen drone footage of the prehistoric monument.

Boris Johnson announced his resignation on Thursday. Here's what happens next, and the legacy he will leave behind.

Boris Johnson resigned as leader of the ruling Conservative Party after his latest scandal led dozens of lawmakers to quit his cabinet and party.

Musicians played the Ukrainian national anthem in front of the National Portrait Gallery in London's Trafalgar Square amid a rally in support of Ukraine.

Boris Johnson is apologizing after initial findings of an investigation found that he and his staff showed “failures of leadership and judgment” for allegedly hosting parties during COVID-19 lockdown.

Boris Johnson appeared before parliament on Wednesday to apologize for attending a party during Britain’s strict COVID-19 lockdown.

The world's most famous recording studio commemorated 90 years this November.

At least two-thirds of Britain's gas stations are empty after a severe shortage of transport truck drivers across the U.K.

The World Health Organization reported that one in three women will suffer physical or sexual violence at some point

London police officer Wayne Couzens is charged with the kidnapping and murder of 33-year-old Sarah Everard.

Archaeologists have unearthed Britain’s third largest stone circle in the Preseli Hills of Wales that they believe was dismantled and rebuilt as Stonehenge in England.

London dog Ruby was rescued by a paddleboarder after falling into the river on a walk.

The footage shows the English capital from the cockpit of a World War II-era Spitfire during a flyover.

Police say the rampage went on for two hours, leaving at least one person dead and several others injured.

A giant swirl of whipped cream with a cherry on top, as well as a fly and a drone, was unveiled on Trafalgar Square's Fourth Plinth in London on Thursday.

Madame Tussauds' most popular figures formed a socially distanced queue outside the wax museum on Thursday to celebrate the venue's reopening.

The 65-foot crane collapsed onto an underdeveloped apartment block in London, authorities said.

The U.K. said the lockdown could last at least another month.

The family of Usman Khan, the man suspected of carrying out a deadly terror attack near the London Bridge released a statement saying they are "shocked and saddened."

Jack Merritt, 25, and Saskia Jones, 23, were stabbed to death in a terror attack near London Bridge on Nov. 29, 2019.