I keep seeing the myth that it’s fine if it isn’t HIV.
Erm, nope. Damaging STD, and considering the cancer risk, miscarriage/birth defect odds and lifelong reputation damage, that’s basically all of them.
And that’s why PUAs hate the UK.
The courts have recognised that person-to-person transmission of a sexual infection that will have serious, perhaps life-threatening, consequences for the infected person’s health can amount to grievous bodily harm under the Offences against the Person Act 1861: R v Dica  2 Cr. App. R. 28. Therefore, the transmission of that infection can constitute the offence of inflicting or causing grievous bodily harm, which when intentional can attract a sentence of life imprisonment.
The relevant offences for a prosecutor to consider are under sections 18 and 20 of the Offences against the Person Act 1861.
Malicious, reckless, aforethought are relevant terms here.
Not using a condom extends the sentence, not informing them of sleeping with third parties that also carry it (current risk level is assessed) will also count (so you can’t blame third party for the risk piggie in the middle willingly took on and spread).
More STDs, higher sentence, longer duration spreading it around, higher sentence, bragging about it or apathy, higher sentence.
And if they’d still give consent when informed (aka when it counts) then why not inform them?
Eating is natural. Presenting someone with adulterated food is still illegal.