- Travel chaos as Heathrow airport closes after blaze at electrical substation The Guardian
- Heathrow Shutdown Exposes Dangers of a Single Point of Failure Bloomberg
- Heathrow Airport latest: Thousands stranded as UK and international flights disrupted after power outage BBC.com
- Counter-terror police leading inquiry into ‘unprecedented’ Heathrow fire The Guardian
- Power appears to have returned to Heathrow but airport remains closed The Independent
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