A teenage girl has applied for judicial review over official school guidance that says she should share changing rooms, lavatories and residential dormitories with trans girls, in the first legal action of its kind.

The 13-year-old, known only as Miss A, says that Oxfordshire County Council’s ‘Trans Inclusion Toolkit for Schools 2019’ is seriously flawed and poses a risk to children.

Despite the council reviewing the guidance, Miss A and her mother felt that their concerns were not addressed so are applying to take them to court so that “the toolkit be quashed either in whole or in part.”

The council’s guidance to more than 300 schools in Oxfordshire says: “Children and young people are supported through the Equality Act 2010 to access the toilet that corresponds to their gender identity; so trans girls because they are girls, can use the girls’ toilets and trans boys the boys’ toilets.

“Single gender toilets can cause issues for children or young people who do not identify with a gender binary such as boy/girl.”