BBC News
Passengers at Stansted Airport have been stranded on trains and planes after a power failure affected the entire airport site.
The airport railway station was initially evacuated after its fire alarms went off.
An airport spokesman said a "power outage" affected the whole site and systems had to be rebooted.
He said restrictions were put in place on arriving passengers to prevent further overcrowding in the terminal.
The airport spokesman said it was not yet known what had caused the power to fail.
