On 12 November 2025 the UK government filed amendments to the Crime and Policing Bill to designate AI developers and child‐protection organisations (e.g., the Internet Watch Foundation) as “authorised testers” legally permitted to test models for generating CSAM, NCII and extreme pornography and to use a new “testing defence” shielding such tests from prosecution. The change responds to IWF data showing AI‐generated CSAM reports more than doubled (199 in 2024 to 426 in 2025), images of children aged 0–2 rose from 5 to 92, and Category A material increased from 2,621 to 3,086 items (now 56% vs 41% prior year). If enacted, regulators must set authorised‐tester criteria and safeguards; immediate implications include mandated pre‐deployment safety testing by developers, expanded technical roles for NGOs, and new obligations tied to model release.