Britain is to take in some of the most vulnerable refugees from the Syrian civil war, including torture survivors and victims of sexual assaults, Deputy Prime Minister Nick Clegg has announced.
No figure is being put on the number of displaced people the UK will take, but hundreds are expected to arrive over the coming year.
The UK is not signing up to take a quota of refugees under the United Nations sanctuary scheme to resettle up to 30,000 vulnerable Syrians in Western nations, but Mr Clegg said the UN High Commission for Refugees backs the Government's plans.
Home Secretary Theresa May will formally confirm the plans in a statement to the House of Commons tomorrow, ahead of a debate called by Labour, which wants Britain to join the UNHCR scheme.
Prime Minister David Cameron has resisted signing Britain up to the UN sanctuary programme, arguing that it is not the solution to a crisis which has seen millions of Syrians flee their homes in a three-year civil war.
He stressed that the UK was already the world's second-largest bilateral donor in the crisis, providing £600 million to help victims of the violence in Syria and neighbouring countries.
After coming under pressure from Labour and Liberal Democrats, he told MPs at Prime Minister's Questions last week that he was ready to consider taking in refugees in cases of extreme hardship. Ms May and Foreign Secretary William Hague have been working on details of the scheme over the past week.
Now Mr Clegg has said: "I am pleased to be able to announce today that the UK will be providing refuge to some of the most vulnerable Syrian refugees. The coalition Government wants to play our part in helping to alleviate the immense suffering in Syria.
"The £600 million we have provided makes us the second largest bilateral donor of humanitarian aid in the world. But as the conflict continues to force millions of Syrians from their homes, we need to make sure we are doing everything we can.
"We are one of the most open-hearted countries in the world and I believe we have a moral responsibility to help."
Explaining the criteria under which refugees will be selected for admission to the UK, Mr Clegg said: "The UN High Commission for Refugees - which backs our new resettlement programme - has said the highest priority should go to women and girls who have experienced or are at risk of sexual violence, the elderly, survivors of torture, and individuals with disabilities, so that's who we'll target.
"Sadly we cannot provide safety for everyone who needs it, but we can reach out to some of those who need it most.
"On top of that, we'll continue to support the peace talks currently taking place in Geneva, because only a political resolution between the (Bashar) Assad regime and Syrian opposition will provide a permanent end to the suffering.
"Britain has a long and proud tradition of providing refuge at times of crisis. This coalition Government will ensure it lives on."
No target will be set for the numbers of refugees to be admitted, with the UK instead working with the UNHCR on a case-by-case basis to identify those most in need of assistance.
Refuge will be offered to some of those most traumatised by the crisis, including vulnerable women and children, who are expected to arrive on a gradual basis over the coming months.