The plan builds on a proposal announced in January to make mental health first-aid training available to all secondary schools, with the aim of having trained at least one teacher in every secondary school by 2019.

The prime minister also wants to provide each school with a single point of contact with mental health services, and to include more in the curriculum about mental wellbeing, particularly in relation to keeping safe online and cyber bullying.

The plans are part of a wider package of reforms that would tear up the Mental Health Act and replace it with new legislation aimed largely at reducing the number of vulnerable people detained in prison cells.

May 2017