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About us

The HardCell website has been produced by Terrence Higgins Trust, the UK’s leading HIV and sexual health charity. Terrence Higgins Trust is a registered charity in England and Wales (reg. no. 288527),
company reg. no. 1778149 and a registered charity in Scotland (reg. no. SC039986).

The information included on this website was correct at the time of going to press. We plan to review the website’s content within three years of each update. For more about Terrence Higgins Trust, visit

If you have any questions or comments about this resource, or would like information on the evidence used to produce it, please email [email protected].

Questions about HIV and sexual health can also be emailed to [email protected] If you’re in the UK you can also call THT Direct on 0808 802 1221.