Air India crash latest: London-bound passenger plane carrying 242 people crashes after take-off...

Here's what we know so far:

There were 242 people on board, including two pilots and 10 cabin crew
Of the passengers, there were 169 Indian nationals, 53 British nationals, one Canadian national and seven Portuguese nationals
The plane - a Boeing 787-8 Dreamliner - gave a mayday call to air traffic control after taking off, but then gave no response
Signal was lost seconds after take-off when the plane had reached 625 feet, according to Flight Radar
The plane came down in a residential area near the airport
"Everyone is running right now trying to save as many lives as possible," the BBC's Roxy Gagdekar reports from the scene