Commuters in London are paying the highest fares in the world. The warning from MPs in today's Evening Standard reveals major cities, including New York and Berlin have cheaper single fares than the Oyster Card.
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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.