- The suspected burglar had been chased by police after an attempted burglary at a nearby retail park shortly before 2am
- British Transport Police sent specialist officers to try to persuade him to come down from the tree near Barney Close
- Rail operator Southeastern was forced to close the track during the morning peak
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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.