In Kenya, anyone under eighteen is legally a child. The Constitution backs this up directly. Article 53 says that whenever a decision affects a child, the child’s best interests must come first. This is the foundation for Kenya’s laws on children and sexual offences.
The Sexual Offences Act of 2006 follows the same idea. In general, the law says a child cannot legally consent to sexual activity. Section 8 makes defilement a crime. Sections 9 and 11 cover attempts at defilement and indecent acts with children. Section 43(4)(f) makes this even clearer: a child cannot give consent to anything the Act treats as a sexual offence.
On the surface, this looks simple. Anyone under eighteen is a child, and the law protects that child from sexual abuse. But what happens when both people involved are teenagers themselves, in a relationship with no force, pressure or exploitation? This is where a strict legal rule runs into the messier reality of how teenage relationships actually happen.
A recent High Court decision looked at exactly this problem. The court examined how the law should treat consent, and who should carry criminal responsibility, when both people involved are adolescents. The ruling also raises a bigger question. Does Kenyan law properly reflect how teenage relationships actually work, or does it sometimes turn normal adolescent behaviour into a crime?
What happened
The case is HSO & 3 others v Director of Public Prosecutions & 6 others (Constitutional Petition E490 of 2025) [2026] KEHC 6812 (KLR) (Constitutional and Human Rights), decided on 20 May 2026.
Police had charged two seventeen-year-olds with sexual offences. Once their age was confirmed, prosecutors dropped the charges under section 87(a) of the Criminal Procedure Code. The two teenagers did not stop there. With support from several organisations, including Katiba Institute, they went to court to challenge the law itself, specifically section 43(4)(f) of the Sexual Offences Act, which says no minor can ever legally consent to sexual activity.
Their argument was this. Applying that rule to their situation was unconstitutional. It turned ordinary, non-exploitative intimacy between teenagers into a crime, and it violated their rights to dignity, privacy, health, and their best interests as children.
The government side, made up of the Attorney General, the Inspector General of Police, and the Director of Public Prosecutions, opposed the case. Their position was that the law exists to protect children, and that the police had acted in good faith because the two teenagers looked like adults at the time of arrest. They also argued that an earlier case, CKW v Attorney General & another (Petition 6 of 2013) [2014] KEHC 3657 (KLR), had already settled this exact question, so the court should not reopen it.
What the court had to decide
The court had two questions to answer.
First, do sections 8, 9, 11, and 43(4)(f) of the Sexual Offences Act become unconstitutional when used to punish consensual, non-coercive sex between adolescents who are not exploiting each other?
Second, did the way the two teenagers were arrested and prosecuted violate their constitutional rights?
What the court ruled
The court ruled partly in favour of the two teenagers.
It found that punishing consensual sex between adolescents, where there is no exploitation, coercion, abuse or serious power imbalance, breaches the Constitution in several ways. Treating all such conduct as a crime, without exception, fails a legal test that Article 24 sets out for limiting rights. It also breaches:
the right to equality, protected under Article 27
the right to dignity, protected under Article 28
the right to privacy, protected under Article 31
the right to health, protected under Article 43
the special protections owed to children under Article 53
This ruling adds an important exception to what looked like a simple rule. Kenyan law still firmly protects children from sexual abuse and exploitation. That part has not changed. What the ruling questions is whether the system as a whole gets the balance right between protecting children and recognising how teenage relationships actually work. Can the law tell the difference between exploitation and the ordinary process of growing up?
What the court ordered
The court made three orders.
The Director of Public Prosecutions must write and publish clear guidelines for handling cases involving consensual relationships between teenagers, within a reasonable time. These guidelines must be consistent, transparent, and follow Articles 10, 27, 28, 31, 43, 53 and 157 of the Constitution.
The National Police Service must review how it investigates and arrests people in sexual offence cases involving minors, and make sure its approach follows this ruling and respects children’s constitutional rights.
Government bodies responsible for health, education and child protection must work together so that teenagers can get sexual and reproductive health information and services without fear of being prosecuted.
The bottom line
This ruling gives clearer guidance on when the criminal law should treat a relationship between teenagers as a crime, and when it should not.
