TEACHERS in Wales threatened legal action today, alleging that a private school had used agency staff during strike action.

National Education Union Cymru claimed that as its members were on strike for the first day of two days of industrial action over pay at Cathedral School in Llandaff, Cardiff, the school had used agency staff to replace strikers.

NEU Cymru said it was considering legal action and said a High Court judgement last year confirmed that it is unlawful to use agency workers to cover those on strike. 

NEU assistant general secretary Emma Forrest said: “NEU Cymru are appalled by the actions of The Cathedral School.

“This is clearly a hostile move from the school and will make settling the dispute more difficult.

“If the school wants children to be back in their classrooms, as our members do, then it is clear they need to improve their offer,” Ms Forrest said.

The school was asked to comment.