Unions representing school workers will take legal action against the government over a new law allowing agency workers to cover for striking staff.
Ministers changed the law in July in response to threats of widespread industrial action over pay. It was previously illegal to draft agency staff in to cover striking workers.
Teaching union NASUWT said it will this week lodge a judicial review of the decision, while support staff union Unison has already lodged papers for its own legal challenge.
The National Education Union, the country’s largest education union, is also participating in a joint legal challenge with other unions, coordinated by the Trades Union Congress. Other unions involved in the judicial review include the GMB and Unite, which represent school support staff.