Heathrow bosses were warned of substation power failure risk days before electrical fire shut airport

Heathrow heat: fire at an electrical substation at Hayes, in west London, which cut power to the airport - (AP)

Heathrow bosses were warned of the risk of the failure of a power substation days before an electrical fire shut the airport for almost 24 hours, MPs have been told.

Nigel Wicking, chief executive of the Heathrow Airline Operators’ Committee (HAOC), said: “I’d actually warned Heathrow of concerns that we had with regard to the substations and my concern was resilience.”