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Heathrow fire caused by known failure at National Grid substation, report finds

By Abigail Townsend

Date: Wednesday 02 Jul 2025

(Sharecast News) - Ofgem has launched an investigation into National Grid, it was announced on Wednesday, after a report found the fire that closed Heathrow earlier this year was caused by a known fault at an electricity substation.
Publishing its final report into incident, the National Energy System Operator said the...

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