An exhibition showingworld's worst humanitarian disasters opens at St Martin in the Fields today tomark World Refugee Day.
The show highlights the plight of families caught up in conflicts such as the war in Syria and refugees who had to flee natural disasters such as the flooding in Pakistan.
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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."
A mum in need of a life-saving stem cell transplant has told of her joy after a visa to bring her donor-match sister to the UK was granted.