Hundreds of London's dirtiest trains are being deep cleaned using equipment usually found in hospitals. First Capital Connect is spending thousands of pounds to clean more than 200, after growing complaints about the state of the service from passengers.
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British Transport Police confirmed the trio have been charged with obstructing trains or carriages on the railway by an unlawful act.
The white hedgehogs were found huddled up in a cardboard box with newspaper and a fleece.
The demonstration, dubbed #OperationShutdown, saw supporters initially gather near Downing Street.