London Fire Brigade has confirmed the alarm has been triggered, but there is no sign as yet of any fire.
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City workers facing burn out from high pressure jobs are turning to the world famous Priory rehab clinic in increasing numbers.
Nick Herbert, 45, was so frustrated by his son not answering his phone that he designed an app that torments recipients until they reply.
Charlie Alliston, 20, collided with HR consultant Kim Briggs, 44, at OId Street, central London in February last year.