Heathrow fire caused by problems first identified by National Grid 7 years ago - Financial Times
- Heathrow fire caused by problems first identified by National Grid 7 years ago Financial Times
- Heathrow shutdown caused by problem found seven years ago BBC
- National Grid's maintenance the damning failure identified by report into fire that sparked Heathrow chaos Sky News
- Heathrow substation fire ‘caused by fault first identified seven years ago’ The Guardian
- Heathrow shutdown blamed on substation fault detected seven years ago The Telegraph