Below are some resources to look at:
This is a very good resource from Children Society:
https://www.childrenssociety.org.uk/what-we-do/our-work/young-refugees-migrants
Great examples of stories by Refugee Council:
Experiences working with children:
Great information about children and mental health:
https://www.physio-pedia.com/Considerations_For_Working_With_Displaced_Children