The Transport Secretary officially opened the capital's newest Airport today. London Southend has been given a new Terminal and a longer runway as part of a £100million upgrade. Could this be the answer to London's air traffic problem? Our Business Correspondent Glen Goodman has been finding out.
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Paramedics were on standby outside the police cordon as armed officers stood by the property.
A team of researchers has taken samples from the ten busiest London Underground lines to work out which are the dirtiest.
The action comes on top of an emergency timetable which has seen hundreds of trains a day being axed.