NHS bosses are planning to relocate the Lydia sexual health clinic from St Thomas' Hospital and are inviting members of the public to give their views.
By completing an online survey or attending a focus group, past, present and potential service users can have their say on what they want from the service and where they would like to see it located.
Possible locations for a brand new centre include Waterloo, Vauxhall, Elephant & Castle and Kennington.
Self-service kiosks and vending machines will allow patients to access self-swab testing kits and condoms and the new clinic will offer new technology and redesigned waiting areas.
Pods and multipurpose clinical rooms will allow for one-stop consultations and examinations, and access will be improved with more convenient opening times.
"We currently see nearly 30,000 people a year at St Thomas' for STI testing, treatment and advice, and we want to make sure the new centre is suited to their needs," says Dr John White, lead consultant for sexual health.
"It is vital for us to get input from the people that will use the service. It's an exciting opportunity for us to develop our sexual health services in the community, and public engagement is key."
The department would like to hear from anyone who will use the service to help create a service that is comfortable and reassuring, and one that appeals to them. There are two ways to do this:
• Complete an online survey by 22 July and be entered into a draw to win a £50 HMV voucher
• Register to attend a focus group on 9 July (6pm-8.30pm) and get paid £25
Respondents should email [email protected] putting 'Survey' and / or 'Focus Group' in the subject line. They should provide their first name only and phone number. They will receive an automated email from the department, to the address they emailed from, with a link to the survey. If they have entered Focus Group in the subject line they will be contacted with more information.