The Liberal Democrats have announced plans which would see all children in English state-funded schools receive sex and relationships education from the age of seven.
The party says the "age-appropriate" classes would make up part of a "curriculum for life", which would also feature lessons about money management and citizenship.
The plan would mean that personal, social and health education (PSHE) is compulsory in all state-funded schools including academies and free schools.
Sex and relationships education is compulsory in local authority-run state secondary schools, but not in academies or free schools.
A report published by Ofsted last year found that sex and relationships education needed to be improved in more than a third of schools.
More top news
The former footballer said he hopes speaking about his grief will help others who find it difficult to talk about their feelings.
Royal Marine Alexander Blackman has spent more than three years in jail since being convicted of murdering an insurgent.
There are believed to be less than 250 of the global population remaining due to poaching and loss of habitat.