After sex education was made compulsory in England in 2019, many schools started bringing in external companies to teach the subject. But with no formal regulation, a vast range of lessons are being offered and some providers refuse to let parents know what's being taught. It's led to some misinformation spreading online and a debate about whether some things are too explicit to learn at school.

Archive from British Pathe, David Rosler via the British Film Institute and the Netflix series Sex Education.