What happens to pan-European child protection post Brexit?

Recent discussions surrounding Brexit have focused on how best to manage the inevitable economic loss of leaving the internal market. However, the free movement of people within the EU has resulted in a whole generation forming family relationships across national borders. Millions of children have parents and extended family spread across the EU. So if the UK leaves the European Union, what happens to these children if there are disagreements and disputes about their care? This article discusses the matters the government will need to consider in relation to cross-border child protection work in a post-Brexit environment.