A busker who used to play on the streets of London for pennies is about to join the high-rollers of Las Vegas.
Musician Si Cranstun, from Croydon, has clinched a record-deal and is now preparing to play alongside 50's legend Little Richard in America.
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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.