Heathrow resumes some flights after fire and power outage

Heathrow says it is prioritising customers diverted to European airports, and warns people not to travel to the airport unless advised by their airline

The airport hopes to run a full service on Saturday - chief executive Thomas Woldbye apologises to passengers, calling the incident "as big as it gets for our airport"

Counter-terrorism police are leading the investigation, but the Met Police says there's currently no indication of foul play. 

A source from the airport says back-up generators kicked in, but they weren't enough to power the whole airport - an air industry boss says it raises "serious questions".

Dozens of homes were evacuated after a fire broke out at a substation near Heathrow late on Thursday night.

Residents in Hayes say they saw flames and smoke from their homes during the night.

Savita Kapur told the BBC she heard a "loud bang" and saw "this thing on fire".

British Airways says it expects 85% of its Saturday schedule at Heathrow to run, but that "it is likely that all travelling customers will experience delays".

In a statement tonight, the airline says it is planning to operate "as many flights as possible" to and from Heathrow on Saturday, "but to recover an operation of our size after such a significant incident is extremely complex".

"We will be contacting all affected customers to advise them of their options, and we thank them for bearing with as work through these solutions," it says.

We're continuing to see pictures of flights touching down on the runway at Heathrow, making the passengers travelling on board some of the first to land at the international traffic hub after a day of disruption.

More flights will hopefully be taking off and landing there in the next 24 hours, as the airport says it hopes to run a full service on Saturday.

Flights from six continents are on their way to Heathrow, with most expected to land in the early hours of Saturday, according to tracking website Flightradar24.

Three British Airways flights – from Hong Kong, Sao Paulo and Johannesburg – are en route to Heathrow, while Qantas expects its flight from Perth to arrive in London just after 06:00 GMT on Saturday.

A United Airlines flight from San Francisco is due around 07:00 GMT tomorrow, and a short-haul Qatar Airways service from Frankfurt will be landing at Heathrow this evening.