UNICEF UK Ambassador Jemima Khan told ITV News the Department for International Development has been "relentlessly brave and supportive" as the government pledged to match donations to the charity's Syrian appeal.
The charity are raising aid to assist children caught up in the crisis and they estimate that four million youngsters are in urgent need of help with temperatures set to plummet.
Ms Khan said: "We're looking for funds for basic items like blankets and shoes as well as the long term campaigns like vaccinations, sanitation, education.
"But, immediately now, temperatures are about to plummet and we've heard time and time again from inhabitants of those refugee camps...that, even things like blankets and warm clothes are essential survival items that are needed now."
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