A Biman Bangladesh Airlines flight to London was forced to turn back yesterday after a power outage disrupted operations at Heathrow Airport.

According to a Biman statement, Flight BG 201 departed Dhaka at 8:42am, made a brief stop in Sylhet Osmani International Airport at 9:06am, and resumed its journey at 10:46am.

However, an unexpected power failure at Heathrow, which caused significant delays and operational difficulties, forced the Boeing 787-9 to turn back before reaching London.

The flight landed in Dhaka at 1:15pm with 267 passengers, including the pilot and crew, onboard.

According to the BBC, Heathrow was to be closed all day yesterday due to a fire at a nearby electrical substation, which supplies its power. The airport, Europe's busiest, warned of "significant disruption" over the coming days and advised passengers not to travel until further notice.

At least 1,351 flights faced possible cancellations, according to Flightradar24.

Biman, which operates four weekly flights to London, said upcoming flights may also be affected.