Public sector spending and working practices had been out of control for years - it was clear to anyone with any knowledge of how the public sector worked that it couldn't go on for ever and when it stopped things would be ugly.
There is no doubt that there are a lot of people in the public sector who deliver a lot of value. However, there are also a lot of organisations and people who clearly aren't - a tidy out was long overdue.
Indeed, a politically astute friend point out that the first reaction of managers would be to cut productive first line services first. The so called "Washington Monument Syndrome":
Laying off people who weren't and aren't contributing anything productive
Saying that UK public services are inefficient is one thing, probably true.
Saying that the layoffs can be confined to people who "aren't contributing anything productive" and be extension health, policing, education, research etc will not get worse at all is an entirely different thing, and I don't think it's true.
There is no doubt that there are a lot of people in the public sector who deliver a lot of value. However, there are also a lot of organisations and people who clearly aren't - a tidy out was long overdue.