In the first hour of a strike by firefighters, London Fire Brigade says it received 12 calls.
Strike incident update: Between 12 noon and 1pm we received 12 calls & crews attended 1 rta but no action was needed. http://t.co/aQPiRqXM1Y
More top news
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.