Since its launch two years ago, the project, called
Members of his own party began to make it publicly clear they no longer supported his leadership.And with that, the last domino fell.
Party activists in Northumberland have been stepping up their campaigning in preparation for an all-out election on 1 May.The county council, England's second largest local authority by area, has been led by the Conservatives since 2017.However, over the past few decades it has changed hands a number of times so is set to be closely contested.
So what are the main parties pledging to do to get the votes?Glen Sanderson, the Conservative leader of the council, highlighted the return of rail passenger services to the south-east of the county as a "great success", with "something like 250,000 journeys taken since the end of December".
He added: "I'm very proud of the fact that just a few miles away is the site of the new data centre campus which will... bring thousands of jobs and £150m.
"Even in some of the remote areas we have got money coming in. Northumberland really is flying."Rosie Walker, of law firm Gilson Gray which is representing the parents, said: "This case will have far reaching implications."
BBC Scotland News understands that the Scottish government is confident that the vast majority of schools in Scotland already offer single-sex lavatories.Ministers are still considering the implication of the Supreme Court judgement and whether any changes will have to be made to toilet provisions.
Ms Walker said all schools in Scotland would now have to "urgently review" whether half of their toilets are for boys and half for girls, as is required by theShe added: "This case, on top of the Supreme Court decision last week, gives focus to the importance of protecting sex-based rights and single-sex spaces."