The government knows they’re on the wrong side of many issues, to the point they know they can’t win an open debate.
So media control, regulation by enforcement, and institutional control becomes the focus of effort.
The British public are in an odd place on this. There's a lot of "folk libertarianism", but that mostly consists of not having ID cards, while at the same time supporting all sorts of crackdowns on protest as soon as it's mildly inconvenient.
And then there's immigration. As in the US, it's a magic bullet for discourse that allows any amount of authoritarianism (or headshots to soccer moms) as long as you promise it will be used against immigrants.