Casting children for Beyoncé's Black is King 'a dream come true'

A woman who cast most of the children in one of the sections of Beyoncé’s Black is King says it was a dream come true "for all black children".

Selma Nicholls says she founded casting agency Looks Like Me after her daughter said she wanted to look like Elsa and Anna in Frozen. Selma spoke told BBC Radio 5 Live what being involved in the project meant to her.