David Cameron signals partial retreat over UK sanctuary for most vulnerable Syria refugees following aid agencies' plea The Prime Minister's partial retreat came after Labour raised in the Commons the letter signed by 25 aid agencies and refugee groups, published in The Independent on Saturday, calling on the Government to end its refusal to take part in the United Nations' resettlement programme. Mr Cameron told MPs: "Where there are extreme hardship cases, I think we should look at this again." He added: "If there are very difficult cases of people who don't belong in refugee camps, who have either been disabled by these dreadful attacks, or are in very difficult circumstances, I am happy for us to look at that argument." Mr Cameron said one child refugee was already been treated in a British hospital. But Downing Street was unable to say how many Syrians might be helped by his more flexible approach. Labour said Mr Cameron's change of heart did not go far enough because he stopped short of saying Britain would join the UNHCR's programme. Labour, which wants the UK to accept 400 to 500 Syrian refugees, will force a Commons vote on the issue a week today, when it hopes to attract the support of Tory and Liberal Democrat MPs who are pressing for a U-turn by the Government. Ed Miliband, who raised Britain's policy on Syrian refugees at Prime Minister's Questions, said he was "somewhat encouraged" by Mr Cameron's answer and that the Government was "gradually inching forward" on the issue. But he appealed to Mr Cameron to go further by opening discussions with the UN, which wants to resettle 30,000 refugees in western countries. The Labour leader said Britain did not have to choose between giving aid and accepting refugees and should do both. Mr Cameron replied: "I don't believe you can solve a refugee crisis of this scale -- when you've got almost half the 9m population of Syria either displaced or at risk of displacement -with a quota system where countries are taking a few hundred refugees." Syria peace talks: John Kerry leads calls for removal of President Bashar al-Assad The Prime Minister said Britain's £600m of aid made it the second largest donor and accused some EU countries of accepting a small number of refugees rather than pledging money for the humanitarian effort on the ground. "I think we are fulfilling our moral obligations to the people of Syria," he said. The fact that the Finns, the French or the Swedes are going to take a few hundred people, that is not fulfilling your obligations. Amnesty International welcomed Mr Cameron's new approach and offered talks with the Government to see how the most vulnerable refugees could be helped. Kate Allen, its director, said: "Up until now the UK has shamefully refused to participate at all in the UN resettlement scheme. It's a huge relief that the Prime Minister is now prepared to revisit this issue and we must move swiftly to offer lifesaving protection.