We empower people to access reliable, trusted remote sexual health services, through our adaptable digital platform, efficient self-sampling and in-house laboratory.


SH.UK is the UK’s leading fully integrated remote sexual health service.

Through SH.UK, Preventx works in partnership with the NHS and local authorities to provide a sexual and reproductive health service offering remote STI testing, treatment and contraception.

Supporting millions of people through remote testing

4 million

STI testing kits have been dispatched through our services.

10 million

tests have been carried out by our in-house laboratory.


average return rate on the test kits we send out to people.


of service users recommend us to friends or family.

Sexual Health London

Sexual Health London (SHL.UK) is a discreet sexual health service for Londoners and is the largest digital sexual health service in Europe, perhaps the world.

The service is run through a partnership between Preventx, who provide the online platform and dedicated laboratory testing, LloydsPharmacy Online Doctor, who provide contraception and chlamydia treatment, and clinical leadership from Chelsea and Westminster Hospital NHS Foundation Trust.

What makes our services unique…

Our digital innovation

Our robust and innovative digital platform is world-class and designed to enable rapid development, with a focus on ease of use for everyone. 

Our technology platform is the backbone of Preventx – it powers everything we do, creating a streamlined experience for service users, efficiently managing every step of the process from kit ordering, dispatch, lab, and results.

Preventx uses a ‘cloud first’ approach to hosting our service, aligning with standards designed to comply with UK NHS frameworks. Preventx is also Cyber Essentials Plus certified – a Government-backed scheme to help businesses ensure their cyber security measures are secure against potential attackers.

Over a decade of expertise in remote sampling

Over more than a decade, we have dispatched self-sampling kits to empower people to take control of their health from home.

We have spent years perfecting and iterating our testing kits, self-sampling guidance and expert service users support, resulting in kit return rates that are industry-leading.

80% of our kits are returned by service users.

Preventx in-house laboratory

Our in-house laboratory

The Preventx in-house laboratory is a UKAS ISO 15189 accredited medical laboratory (No. 7568) and adheres to a strict quality system, allowing us to carry out high quality STI tests with quick, reliable results. Preventx is also regulated by the Care Quality Commission (1-6150510784). 

We only process our own tests, from our own sampling kits and with a focus on sexual health. We don’t process tests for anyone else, so no other work is more important or higher priority.

Our lab processes 300,000 tests each month.

Packing and dispatch

All kits are packed and dispatched by our dedicated team, through an innovative, personalised and efficient process that gives service users get the best experience, whilst ensuring that efficiencies in the process are passed on through value to our partners.

Our team sends out more than 20,000 kits each week.

Exceptional quality and regulation

Quality assurance is at the heart of everything we do, embedded through all of our systems, processes and working practices. 

Preventx is regulated by the Care Quality Commission (1-6150510784). The Care Quality Commission (CQC) is the independent regulator of health and adult social care in England.