Doesn't have to be an SVG, just has to be text. Pornography involving children is Right Out, regardless of the medium, and that's not going to change.
The distinction between illegal porn, models that are fine tuned to write illegal porn, and general purpose models that may be capable of writing illegal porn but aren't fine tuned to it is going to be an interesting one for the law to figure out. A microcosm of many larger issues, really - maybe even reaching as far as general purpose computing (imagine a GPU that won't run unsigned models).
There was a private members bill in 2023 [1] that didn't go anywhere, we signed up for the Council of Europe's Framework Convention on AI in 2024 [2], and there was a consultation on copyright and AI launched in Dec 2024 [3]. There's a bill promised in 2025, but we don't really know what it's going to include (any assumptions seem to be off the table since the AI summit in Paris). I think that's it.
[1] https://lordslibrary.parliament.uk/research-briefings/lln-20...
[2] https://www.gov.uk/government/news/uk-signs-first-internatio...
[3] https://www.gov.uk/government/consultations/copyright-and-ar...