First and foremost, it's not something limited to UK. Maybe it's because I'm watching things from "outside" the so-called "first world" (I'm Brazilian), and I can't help but notice how it's something that have been spreading throughout the countries: Canadian bill whose number I forgot, EU's "Chat Control", some Australian laws, etc... It's getting everywhere! It didn't start yesterday, also: I remember SOPA and PIPA back in 2010s (or was it 2000s? I'm getting old).
It's worldwide, and it won't be long before there are no more countries where "nothing to fear, nothing to hide" is the official motto via some kind of global treat/pact. It won't stop in adult entertainment: eventually, it'll cover every online activity. In this sense, "children" are just the frogs being morally leveraged by scorpions to cross an Orwellian river.
That said, VPNs are someone else's computers sitting between latitudinal and longitudinal coordinates delimiting some geodesic convex hull we know as "country/nation" ruled by an entity who happens to have the monopoly over asymmetrical forces ruling over that very someone. Even nodes from Tor, I2P, Yggdrasil, Hyphanet, GNUNet, Usenet servers or grand-old SOCKS4/SOCKS4a/SOCKS5 proxies are someone else's computer sitting inside some "country".
And if all countries end up agreeing, out of shared dominance interests (even the so-called "inimical" countries, because even those "inimical" countries agree on certain treats such as the Global Treat regarding Antarctica), to some kind of "Online Kid Protection Global Treat" or whatever frog they can take any moral advantage of, there will be no computer proxification left for circumventing the new KYC requirements for accessing the Web, because there'll be no more alternative countries left... Not even micronations such as Principality of Sealand.
Yeah, future doesn't seem good, and the majority of global citizens won't fight against it (we, privacy-conscious and tech-savvy people, we're not the majority), so it's kind of a Cassandra curse going on right now.
Maybe we must go back to radio communication? Radio mesh networks? Perhaps well-hidden geo-treasure pen-drives for exchanging and archiving files? Creating our own novel ciphering methods, steganography and security through obscurity, becoming able to physically speak through coded language on a daily basis? Even carrier pigeons and smoke signaling (I'm not joking) feels "safe" and out of the Orwellian reaches for now... For now.
(I guess they could still be spotted by LEO satellite imagery. And god-forbid a smoke pattern is caught modulating and transmitting the original uncropped Lena picture over the atmosphere /s).