London buses will go cashless from the middle of this year. Transport for London says money payments currently make up just 1% of journeys with contactless payments using bank cards becoming increasingly common.
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London City Airport is closed after reports of a "chemical incident", London Fire Brigade said.
Council leaders today called on the government to provide extra money to help resettle the youngsters in the capital.
An eyewitness said: "It was very unnerving. It was just after 12pm and there were suddenly police vans and cars everywhere."