The UK Government has been accused of using the "nuclear option" to block controversial gender reforms passed by Holyrood.
Tory ministers last night confirmed they would use a Section 35 order for the first time since the Scottish Parliament was opened in 1999 to strike down a piece of legislation.
Nicola Sturgeon branded the move a "full-frontal attack" on devolution and promised her government would defend the Bill. SNP ministers are now considering their next move but it is expected they could launch a judicial review.