> I hope that's shown in the evidence anyway

tl;dr: Yes

Paraphrasing from [0], after September 1998 when the restriction was introduced, "The annual number of deaths from paracetamol poisoning decreased by 21% [...] the number from salicylates decreased by 48% [...] Liver transplant rates after paracetamol poisoning decreased by 66% [...] The rate of non-fatal self poisoning with paracetamol in any form decreased by 11%"

See also [1]: "in the 11 years following the legislation there were an estimated 765 fewer suicide and open verdict deaths from paracetamol poisoning, which represented a reduction of 43% [...] This reduction was largely unaltered after controlling for a downward trend in deaths involving other methods of poisoning and also suicides by all methods."

[0] https://pmc.ncbi.nlm.nih.gov/articles/PMC31616/

[1] https://www.psych.ox.ac.uk/research/research-groups/csr/rese...