By most standards, the British political tradition has remained paternalistic in it's mindset, and a lot of the shifts in civil liberties happened fairly late (1980s-90s) and without the requisite judicial scaffolding being built in place.
Furthermore, a lot of the same powers and institutions used for internal security during the Troubles were redeployed during the GWOT and never pushed back against legally speaking.
For example, London was the first major city to deploy centralized CCTV surveillance en masse.
And this isn't a UK only thing - across Europe, mass surveillance laws and government perogative are much stronger than their equivalents in the US, and given tensions on the eastern border of EU+ due to a belligerent neighbor like Russia and Azerbaijan using grey zone tactics, I think we might see a further regression on this front, because NatSec will always trump liberties.
By most standards, we're in an interregnum period similar to the 1930s, the "Dreadnought Wars" (1906-1914), or the 1950s that can spill over.