London's key station of King's Cross was briefly closed after reports of a "fire alert."
London Underground operator TfL said in a statement on Twitter: "Station closed while we deal with a fire alert. London Underground tickets are being accepted on London Buses to stations either sides."
They added on their website: "TfL released a statement on their website, which read: "Station closed while we deal with a fire alert. London Underground tickets are being accepted on London Buses to stations either sides."