How many children don't go to school in Britain?

As of recent estimates, around 1.5 million children in the UK are not in school, which includes those who are homeschooled, excluded, or not registered. The figure represents a small percentage of the total school-age population. Factors contributing to this include family choices, mental health issues, and other socio-economic challenges. However, the exact numbers can fluctuate and may vary by region and over time.