Number of reported cases At least 33 How do we calculate the number of cases


Two sections of a 19th century general criminal law (OAPA 1861) related to grievous bodily harm can be used to prosecute either ‘reckless’ (Section 20) or ‘intentional’ (Section 18) disease transmission in England, Wales and Northern Ireland. While only reckless transmission is a crime, it is possible to be prosecuted for intentional exposure as well as transmission.

The maximum penalty for reckless transmission is a prison sentence of five years for each person someone is found guilty of infecting. The maximum penalty for intentional transmission is life imprisonment. Non-UK residents can be recommended for deportation upon completion of their sentence. While courts have applied Sexual Harm Prevention Orders to a small number of individuals, mandating them to disclose their HIV-positive status before engaging in sex, disclose of one’s HIV-positive status before is generally not mandated in England, Wales and Northern Ireland.

Several Appeal Court judgements, as well as regularly updated guidelines from the Crown Prosecution Service, have established that a person living with HIV can only be found guilty of reckless HIV transmission if all of the below apply:

  • They had sex with someone who didn’t know you had HIV, meaning that disclosure can be a defence.
  • They knew they had HIV at that time, although not testing despite strong evidence they might have been infected, known as ‘wilful blindness’, is not a defence.
  • They understood how HIV is transmitted.
  • They had sex without using “safeguards”, which can include either condoms or being on effective antiretroviral therapy.
  • It can be proved beyond reasonable doubt that HIV was transmitted from the defendant to the complainant(s).

Since the first successful prosecution in England, of Mohammed Dica in 2003, there have been around 30 known HIV criminalisation cases relating to sexual acts, almost all for reckless HIV transmission. The one successful prosecution for intentional transmission, in 2018, was exceptional, and was only possible because it was proven that the accused had both maliciously and intentionally tried to – and subsequently did – pass on HIV to a number of complainants. Another case in 2011 apparently involved an initial charge for intentional transmission, but reporting in 2022 suggested the same man was charged for reckless transmission (section 20) more than 11 years later after being extradited to the UK from Jamaica. It is not clear what transpired in the years between the reports. The man will be tried in May 2023.

Despite these known cases, it is believed that many more individuals (possibly hundreds) have been arrested and investigated, according to a 2009 report, Policing Transmission, which reviewed police handling of criminal investigations relating to transmission of HIV in England and Wales, 2005-2008.

HIV has also informed use of the criminal law in other ways. In May 2020, a woman living with HIV and Hepatitis C, who also had mental health issues, was arrested for being drunk and disorderly. While at the police station she threw a soiled sanitary towel at a police officer. She was convicted of assaulting an emergency worker, with the judge giving her a 26 week jail sentence “to express public disgust”. Her HIV status was known because her file had already been ‘marked’. In June 2020, a man living with HIV who was also arrested for being drunk and disorderly was sentenced to 22 weeks in prison for assaulting two emergency service workers after he spat or attempted to spit on them four times. The offence was considered serious because it considered a deliberate attack on a public servant carrying out public duties at a time of national crisis (COVID-19). In October 2020, two women living with HIV were jailed for biting police officers in two separate incidents. In the first case,  a woman living with HIV was jailed for more than two years after biting a police officer and injuring others. The second case involved a woman with an almost undetectable viral load jailed for 14 months although the bite did not break the skin.

Civil law has also been used to require HIV disclosure ‘before commencing a relationship’ through a court-ordered Sexual Offences Prevention Order (SOPO), although in one known case a man has been jailed four times for breaching a SOPO, and is awaiting sentencing for a fifth breach.

In addition to HIV-related prosecutions, there have been also been successful prosecutions for the sexual transmission of herpes and for hepatitis B.


Offences Against The Person Act 1861, Sections 18 and 20

General criminal law (active)
Relevant text of the law

Offences Against The Person Act 1861, Sections 18 and 20

Section 18: Wounding with intent to do grievous bodily harm

Whosoever shall unlawfully and maliciously by any means whatsoever wound or cause any grievous bodily harm to any person …with intent, … to do some … grievous bodily harm to any person, [or with intent to resist or prevent the lawful apprehension or detainer of any person,] shall be guilty of an offence, and being convicted thereof shall be liable … to imprisonment for life.

Section 20: Inflicting bodily injury, with or without weapon

Whosoever shall unlawfully and maliciously wound or inflict any grievous bodily harm upon any other person, either with or without any weapon or instrument, shall be guilty of a misdemeanour, and being convicted thereof shall be liable … to imprisonment … for not more than five years.

Further resources

Information for individuals living with HIV about the law in England (and other UK jurisdictions).

Resources for both individuals living with HIV, as well as those advocating on their behalf, on all aspects of HIV criminalisation in England (and other UK jurisdictions).

Explores use of the Offences Against the Person Act 1861 to prosecute people who have transmitted HIV infection to sexual partners in England, Wales and Northern Ireland. Examines evidence in cases of sexual HIV transmission and considers the likely impact that criminalising HIV transmission has on public health, especially HIV prevention. Includes recommendations.

This internal guidance from the Crown Prosecution Service (CPS) for England & Wales sets out how prosecutors should deal with cases where there is an allegation that the suspect/defendant has passed an infection to the complainant during the course of consensual sexual activity. It should be read in conjuction with the external CPS Policy for prosecuting cases involving the intentional or reckless sexual transmission of infection.

A review of police handling of criminal investigations relating to transmission of HIV in England and Wales, 2005-2008. The report was used as evidence to argue for both prosecutorial and police guidance. To get a sense of its findings and impact see also the aidsmap.com coverage of the launch of the report held in the UK House of Commons in January 2009.

This information was last reviewed in November 2022