Officials and travelers are calling for an investigation into not only how the blaze started, but how it was able to cause such a large disruption to global travel.

Heathrow bosses on Monday defended their response to a fire that shut down Europe’s busiest air hub for almost a day, after Britain’s energy system operator suggested the airport had enough

Britain's government and London's Heathrow Airport have ordered investigations into the handling of a power outage Friday as a result of a substation fire.

The boss of Heathrow came under fire for an 18-hour shutdown at the airport last month after an airline representative said he had raised concerns about the hub's resilience days earlier, as lawmakers scrutinised the nationally embarrassing incident.

Airlines warned Heathrow airport about concerns over the resilience of its electricity supply days before a power outage caused the closure of the UK’s busiest airport and hundreds of cancelled flights,

Train service between Heathrow Airport and central London was briefly disrupted on Wednesday morning because of a fire next to a track. Trains linking Paddington Station with Heathrow’s Terminal 5 faced delays,