- 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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Paramedics were on standby outside the police cordon as armed officers stood by the property.
A team of researchers has taken samples from the ten busiest London Underground lines to work out which are the dirtiest.
The action comes on top of an emergency timetable which has seen hundreds of trains a day being axed.