Sexual health and HIV


Our Jefferiss Wing sexual health clinics offer testing, treatment and advice for sexually transmitted infections (STIs). Where possible we will diagnose and treat you at your first visit. However, not all infections can be diagnosed immediately – samples may need to be sent off to our laboratories for analysis. We will contact you immediately to ask you to return for treatment, if your results are positive for an STI.

Our address is Jefferiss Wing, St Mary's Hospital, Praed Street, London W2 1NY.

Get an online sexual health check-up with Sexual Health London

Sexual Health London is a new online sexual health service for people who want a straightforward and convenient test for sexually transmitted infections without needing to visit a clinic. It is available to residents of all London boroughs except Hillingdon, Hounslow, Sutton, Croydon, Greenwich, and Barking and Dagenham.

Just register for SHL and complete the online consultation. If the service is right for you, a free kit will be posted out so you can collect your samples and return them to the lab for testing – you will receive the test results within a few days.

Register for Sexual Health London

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If you have been sexually assaulted, The Havens can give you advice and support.

If you can’t find what you need above and need to be seen today, please come to our sexual health walk-in clinic at the Jefferiss Wing. You can be seen without making an appointment during our opening hours.

Our sexual health walk-in clinic

If you’re experiencing symptoms or you need advice about contraception, you can come to our sexual health walk-in clinic Monday to Friday, with the exception of bank holidays, without booking an appointment. 

Below are the opening times for the walk-in clinic. Please note that you can register from 08.00 but you will not be seen until after 09.00.


08.00 to 18.15


08.00 to 18.15


11.45 to 18.15


08.00 to 18.15


08.00 to 15.15


Alternatively you can book an appointment in advance. Appointments for this clinic are released throughout the day.

Concerned about symptoms?



If you need contraception, we provide all forms including long-acting methods. Please book an appointment or visit our sexual health walk-in clinic. For contraceptive implant fitting or removal, please book an appointment at our implant clinic.

NHS PrEP trial 

The Jefferiss Wing is taking part in the IMPACT PrEP trial. We have spaces for men who have sex with men and other people at who are at higher risk of HIV. If you would like to find out about joining the trial or discuss other ways to access PrEP, please book an appointment at our Guys@Marys clinic or walk in to speak to one of the team. Go to the IMPACT trial website for more information.


Patient information leaflets

Family Planning Association (FPA)

British Association for Sexual Health and HIV (BASHH)

Further online resources

Take our friends and family test Learn more

Would you recommend our services to your friends and family? Let us know by completing our friends and family test. Your comments will help us to make changes and take immediate action when there’s a problem.


Jefferiss Wing leaflets

I was delighted to find that I could now book an appointment for a sexual health check-up and wasn't disappointed. I was in and out in 25 minutes and my lovely nurse couldn't have been more friendly, helpful and thorough.

Jefferiss Wing

Both the receptionist and healthcare staff are extremely friendly and professional. You are assigned a unique 'name' after you register. This will be what they call out in the waiting room and used in future to make appointments and ring regarding your results. It just makes it a little more comfortable for people who prefer a more confidential service at the clinic.

Sexual health tube map

The staff at the Jefferiss wing were discreet, friendly and knowledgeable. I'd highly recommend.

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