There’s a kind of Orwellian inevitability to this:
“Action to promote the wellbeing of children by combating child sexual abuse material (CSAM) … (2) The “CSAM requirement” is that any relevant device supplied for use in the UK must have installed tamper-proof system software which is highly effective at preventing the recording, transmitting (by any means, including livestreaming) and viewing of CSAM using that device.”
All you have to do is search for Baroness Benjamin in the document and up comes her goal of looking through the square window into your device.
Also, India recently tried “mandatory tamperproof software”; it didn’t fly, and it would not have worked anyway.