If you consent to sex with your new partner on the condition they're checked and clean of any STI. But find out they lied. What rights do you have?
Protection being Non barrier methods (IUD)
Does the sex become un-consensual?
Posted May 29, 2021, 9:18 AM UTC
It is probably helpful to set out the cases on each side of the "conditional consent" discussion. The relevant legislation is section 75 of the Sexual Offences Act 2003, which states that consent is not valid if someone is 'intentionally deceived...as to the nature or purpose of the relevant act'. The courts then have to interpret that statement to decide what constitutes the 'nature or purpose' of the act when conditional consent has been given.
Firstly, conditional consent situations in which the consent given remains valid, and someone has not committed an offence: Lying about being single/divorced, rich, and so on is all accepted as legally permissible.
When it comes to an STI, failing to mention you know you are HIV positive is not a criminal act: R v EB [2006] EWCA Crim 2945: 'Where one party to sexual activity has a sexually transmissible disease which is not disclosed to the other party any consent that may have been given to that activity by the other party is not thereby vitiated. The act remains a consensual act.'
Note however that this is no defence to a charge of GBH if someone is infected as a result: 'However, the party suffering from the sexual transmissible disease will not have any defence to any charge which may result from harm created by that sexual activity, merely by virtue of that consent, because such consent did not include consent to infection by the disease.' (Ibid.) That was also a discussion about implied consent, i.e. failure to mention something that might be relevant. It did not cover explicitly lying about it as in the situation you mention.
And secondly, cases in which the court has decided that consent was not valid, and an offence has been committed: Removing a condom during sex ('stealthing') is an offence (Assange v Swedish Prosecution Authority [2011] EWHC 2849) as is deception surrounding gender (R v McNally [2013] EWCA Crim 1051)
The situation you mention could be seen as closer to the EB case, in which consent remained valid. But the CPS are becoming increasingly eager to test the boundaries of the law in this area, and they might well consider charging if the condition regarding checking for an STI could be proved.