As we've reported, the plane crashed into doctors' accommodation when it came down near the airport in Ahmedabad.
Darshna Vaghela, a local politician, tells reporters the flats of several doctors have been damaged.
"I was in my office nearby when the plane crashed and there was a loud thud," she says. "We rescued many doctors from their flats."
Image source, ANIUsing data from Flightradar24, we've compiled a timeline of the Air India plane's take-off:
The UK Foreign Office (FCDO) has arranged crisis teams in India and the UK, Foreign Secretary David Lammy says.
He tells the Commons: "My thoughts, and I’m sure those of the entire House, are with those who’ve been affected by the tragic plane crash in India this morning.
"We know that British nationals were on board and I can confirm that the FCDO is working urgently with local authorities to British nationals and their families, and has stood up a crisis team in both Delhi and in London."
Our correspondent Roxy Gagdekar is reporting from the site of the crash in Ahmedabad.
In this clip you can see emergency services trying to douse flames in the streets where the plane came down.
BBC correspondent reports from scene of Air India crash
We are now beginning to hear from anxious relatives outside hospitals in Ahmedabad.
Poonam Patel, who is at the Civil Hospital in Ahmedabad, tells news agency ANI that his sister-in-law was on the flight to London.
"Within an hour, I got the news that the plane had crashed. So I came here," he says.
'We don't know anything': Relatives wait outside hospital
Ramila says her son had just gone into the doctors' hostel for a lunch break when the plane crashed there.
She says he jumped from the second floor and suffered injuries, but is safe.
Image source, ANIRamila's son jumped from the second floor of the hostel
We're now hearing from Indian Prime Minister Narendra Modi.
In a post on X, he says: "The tragedy in Ahmedabad has stunned and saddened us. It is heartbreaking beyond words.
"In this sad hour, my thoughts are with everyone affected by it.
"Have been in touch with ministers and authorities who are working to assist those affected."
The Air India enger plane crashed near the airport in Ahmedabad, western India.
The last signal was received seconds after take-off, according to Flightradar24, when the plane was at 625ft (190m) (airport altitude is about 200ft).
The plane crashed in a residential area near the airport in Ahmedabad - police say it came down on a doctors' hostel.
The King is being kept updated on the developing situation after the Gatwick-bound plane crashed, Buckingham Palace says.
Jonathan Josephs
Business reporter
This Air India crash is the first time a Boeing 787 aircraft has come down like this.
The model was launched 14 years ago and just six weeks ago the US planemaker lauded the fact the model, also known as the Dreamliner, has reached the milestone of carrying one billion engers.
To mark that occasion the company said the global 787 fleet of more than 1,175 airplanes has flown nearly five million flights covering more than 30 million flight hours.
The crash is a blow for the company which has been struggling to overcome a range of problems, including fatal crashes, with its 737 programmes.
It will be another test for CEO Kelly Ortberg who is about to mark his first anniversary in the job.
He was brought in to try and help Boeing sort out the issues that were raising questions about its future.
We've had an update from Boeing - as a reminder, the plane that crashed is a Boeing 787-8 Dreamliner.
"We are aware of initial reports and are working to gather more information," the statement says.
Air India has set up a dedicated hotline for engers. Families in India seeking more information can call 1800 5691 444.
UK Prime Minister Keir Starmer says his thoughts are with the engers and families of those on the Air India flight that crashed in Ahmedabad on its way to London Gatwick.
He says: "The scenes emerging of a London-bound plane carrying many British nationals crashing in the Indian city of Ahmedabad are devastating.
"I am being kept updated as the situation develops, and my thoughts are with the engers and their families at this deeply distressing time."
A senior police officer in Ahmedabad tells ANI news agency that the London-bound plane crashed into a doctors' hostel, an accommodation for local medical professionals.
He says police, firefighters and other civic workers reached the spot within minutes. Rescue operations are still under way.
By Josh Cheetham
Weather conditions were stable and clear when the plane crashed, says flight safety expert Marco Chan.
Surface winds were light and visibility was 6km, according to the aviation weather forecast at the time, known as METAR.
Chan adds: "There were no significant clouds or weather phenomena reported, with no indications of wind shear, storms, or other adverse conditions that might have contributed to the incident."
The UK Foreign Office says "the UK is working with local authorities in India to urgently establish the facts and provide to those involved".
British nationals who require consular assistance or have concerns about friends or family should call 020 7008 5000.
It's been just over an hour since we first reported an Air India plane crashed near the airport in Ahmedabad.
Here's what we know so far:
We've now got more pictures from the scene in Ahmedabad:
Image source, AP
Image source, APRoxy Gagdekar
BBC Gujarati, Ahmedabad
The scene here is very shocking. Everyone is running right now trying to save as many lives as possible.
A rescue operation is going on at the spot very near to the airport.
Ambulances are all over the area. Roads are blocked.
Emergency response teams are still trying to extinguish a fire.
People say they heard a loud sound and watched black smoke coming out. Many people started to gather here. Volunteers in the nearby area are trying to help as much as they can.
The fire brigade then started the rescue operation. Bodies are still being taken from the area.
There has been no official confirmation about the crash or the number of casualties.
Image source, APAir India has now given the breakdown of the different nationalities on-board flight AI171.
There were 169 Indian nationals, 53 British nationals, one Canadian national and seven Portuguese nationals on board.
The airline says the injured are being taken to the nearest hospitals.