Afghan refugee families may want to see legal advice and support. You can find a list of legal services that specialise in supporting refugees and people seeking asylum on the Guidebook here 

https://ascpractice.camden.gov.uk/early-help-guide/family-early-help-covid-guidebook/legal-debt-welfare-and-other-advice/legal-support-for-refugee-families/

Migrant Rights Network also have a number of guides to help migrants understand their rights. You can find this here

https://migrantsrights.org.uk/reports/know-your-rights/