On March 21, 2025, a massive fire at the North Hyde electrical substation in Hayes, West London, led to a significant power outage that forced the closure of Heathrow Airport, one of the world's busiest air travel hubs. The blaze, which began late Thursday night, resulted in the airport halting operations throughout Friday, affecting over 1,300 flights and disrupting travel plans for potentially over 100,000 passengers. Emergency services, including approximately 70 firefighters, responded to the incident, evacuating at least 150 people from the affected area. The fire also caused power outages in thousands of homes and businesses nearby. Passengers are advised to avoid traveling to Heathrow and to contact their airlines for the latest information on flight statuses.