The important question, only important question IMHO, is how they handle positives. Do they go all guns blazing and arrest the person on the spot? Or do they use a restrained approach and first nicely ask the person if they have any ID, etc? That's the important bit.
Investigatory Powers Act 2016 literally nicknamed Snoopers' Charter. Means ISPs keep all your traffic for minimum a year, police are given access to it, but politicians are exempt and need a warrant to have their data viewed?!?!?
UK police have been rolling out Live Facial Recognition in London and Wales for the last few years. Seven new regions are being added. 10 new vans coming in.
Supermarkets are using facial recognition to keep a database of people they deem criminals.
UK tried to make Apple put in a backdoor to its encrypted storage. Apple removed the ability for UK citizens to use that feature.
Online Safety Act forced online services to implement age verification for "adult" content. Many niche forums closed down because they would face large fines and jail time if they didn't comply. Larger businesses offloaded this requirement onto third party companies so now if you want to see "adult" content online you need to share your face or bank details or government ID with a random third party likely from a different country.
None of the major political parties care about digital rights and in fact want MORE surveillance.