Heathrow Airport experienced a significant power outage due to an unaddressed electrical fault in a substation, leading to chaos and disruption. The issue, caused by moisture, was first flagged seven years ago but left unrepaired.

Heathrow Airport's 2023 power outage and subsequent fire were caused by a preventable technical fault in a transformer, known to National Grid for seven years but left unrepaired, leading to a catastrophic failure and travel chaos.