The Met police will launch a major new crackdown on crime, disorder and anti-social behaviour in the West End later today.
The campaign, called Operation Trafalgar, includes an area with a bed in it to help worse-for-wear revellers sober up.
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Members of the Royal Philharmonic recorded the recital at London's famous Abbey Road Studios on custom-made instruments.
The three-week trial is designed to speed-up the flow of passengers leaving Holborn station during the morning rush hour.
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