>> A tale of two brothers. Torn apart by war in the Middle East, reunited in Britain. Wishing to remain anonymous, they may be safe now, but their legal status is still pending, their families still in Syria. They didn't have the money to make the dangerous journey together. So the eldest arrived first.
His younger brother, 15 when he set off, found himself stranded in the French port city of Calais. NGOs say there are thousands of child refugees traveling alone across Europe, living in filthy and dangerous conditions. Under the Dublin Treaty, they have a right to be reunited with relatives already in Europe, but NGOs say the system is broken and youngsters are falling through the cracks.
Citizens UK with the help of Avast, the world's largest online campaigner, are crowd funding money to step in and help, reuniting vulnerable children with their families. The brothers are one of 30 families they've reunited from Calais. Were you afraid at any point during your journey to get here?
>> We were so afraid. We were all young. The others were older than us, they were always shouting at us or trying to fight us and we didn't dare say anything because they were bigger than us.
> Laura Griffis from the campaign group, say they're currently working with 157 other children in Calais who have family in the UK, providing them access to lawyers and informing them of their rights.
>> My fear is that these children will die. They will die jumping on trains and into the back of lorries trying to reach their family members. Because their brothers and sisters and mothers and fathers are 20, 30 miles away.>> The British government has agreed to take in thousands of unaccompanied children from refugee camps across Europe.
But it's a process that will take months. Campaigners are calling for those that already have family here to be given the chance to go back to school in September.