https://www.youtube.com/watch?v=435xoocUDdY

SIA flights to and from London affected by Heathrow Airport fire
Travel at London’s Heathrow Airport has been brought to a standstill. A fire at a nearby substation triggered a power outage and shut down Europe’s busiest hub for aviation. Eight Singapore Airlines flights to and from London were affected by the fire near Heathrow Airport. SQ306 was diverted to Charles de Gaulle Airport in Paris and SQ322 to Frankfurt. SQ308 returned to Singapore at around 4.30pm local time and was cancelled thereafter. The remaining five flights have been cancelled. Nikhil Khattar and Alxis Thng with the latest.
from CNA