Passengers using Heathrow face a rise in ticket prices under a £3 billion investment plan proposed today by the airport's bosses.
If regulators approve the five-year plan, it would allow Heathrow to charge airlines higher fees.
That means an increase equivalent to more than £19 per passenger from the end of this year, rising to more than £27 in 2018.
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Pictures of today's events unfolding following a major security incident at the Houses of Parliament.
At least two people have died after a knifeman brought terror to the heart of Westminster.
The Cobra committee brings together government ministers with senior officials of the emergency services and security agencies.