PrEP demand in England is rapidly accelerating – and most will want to join the trial

A survey of people currently using pre-exposure prophylaxis (PrEP) has found that PrEP use has rapidly accelerated in the last year, with more than half of those surveyed starting since the beginning of 2017. The short survey was conducted by PrEP advocacy sites iwantPrEPnow and PrEPster, with assistance from Public Health England.

The study finds that the vast majority of people using PrEP are currently buying it online but intend to switch to join the 10,000-strong PrEP IMPACT trial when it starts, which NHS England announced yesterday should happen "by September".

A large majority of survey respondents (61%) would want to get their PrEP from a London-based clinic and a majority of Londoners (68%) say they would prefer to get it from one single clinic – 56 Dean Street in London’s Soho district.



An umbrella term for people whose gender identity and/or gender expression differs from the sex they were assigned at birth.

post-exposure prophylaxis (PEP)

A month-long course of antiretroviral medicines taken after exposure or possible exposure to HIV, to reduce the risk of acquiring HIV.

response rate

The proportion of people asked to complete a survey who do so; or the proportion of people whose health improves following treatment.

The survey was conducted in ten days, from 19 to 28 July 2017. It was distributed to approximately 3300 people who had signed up to the iwantPrEPnow website saying they wanted regular updates on the IMPACT trial. Only people who were currently, or had at some point, taken PrEP and were currently living in England were eligible.

There were 766 responses, which gives a response rate of nearly one in four – very high for an internet survey. Will Nutland, co-founder of PrEPster said, "The caveat we should add to this survey is that the most motivated current PrEP users - or potential users - will sign up to a mailing list, and the most engaged of them will respond to a survey. As such, this survey might not reflect broader demand for PrEP. But what it does show us for sure is that there are 700 people who are intending to start on the trial, and they are intending to start within a month of the trial enrolling."

Nearly all were male, including four transgender men. Two women, one of them transgender, answered the survey while four respondents, three of whose gender was not the same as at birth, preferred to define their gender another way or were non-binary, yielding a maximum eight respondents (1%) who were trans*.

The vast majority defined themselves as ethnically white (86%, 60% defining as white British). Over 6% (49 people) defined as being of some Asian background and over 3% (24) defined as being of some black background, with ten people saying they were of mixed ethnicity and 13 replying ‘other’ or preferring not to say.

Most (95%) were men who had sex exclusively with men but 22 (3%) had sex with men and women and two with women only. Twelve people preferred not to say.

A majority of respondents (53%) were aged between 25 and 40; 7% were under 25, 21% in their 20s, 38% in their 30s, 28% in their 40s, 12% in their 50s and 2% 60 or over.

Most participants (95%) had taken PrEP in the last year and the rest had done so at some point in the past.

The survey shows that PrEP use in England is accelerating rapidly. Only six people said they took PrEP before 2014, 30 started in 2014, 53 in 2015, 252 in 2016 and 425 in the first seven months of 2017. Even if PrEP use stops accelerating and new users join at the same rate for the last five months of 2017 as for the first seven, this implies at least 725 PrEP starters in 2017.

Greg Owen, co-founder of iwantPrEPnow said, "This survey for the first time gives us a much clearer picture about the number of PrEP users in England. Now we know where people are buying their PrEP from, we can extrapolate from the sales of Dynamix - the only supplier that provides us with sales data to the UK. We've been estimating for the past few months that between 6-8,000 people are buying PrEP online in the UK and that figure is substantiated by the data from the survey."

Most respondents (73%) said they were taking PrEP “every day or on most days” while one in six (17%) said they took it around specific episodes of sex. Six per cent said they were taking it approximately on alternate days while 4% said they had only taken it, or were taking it now, for a short period of time.

The vast majority (86%) were buying PrEP online and of these 52% were buying it from iwantPrEPnow’s preferred suppliers Dynamix International, with 31% from United Pharmacies and 11% from All Day Chemist. Will Nutland, co-founder of PrEPster said, "Not everyone who currently self-sources PrEP will meet the criteria for enrolment on to the trial. As such, we'll continue to provide information about how to obtain PrEP safely and legally online, and work with clinical colleagues to ensure that PrEP support continues to be provided to PrEP users who are not on the trial."

The minority who were not sourcing PrEP online were getting it via repeated post-exposure prophylaxis (PEP) prescriptions (10%), from friends (8%), via private doctors’ prescription (3%) or from an informal contact (2%). (People could give more than one reply to this question, so this adds up to more than 100%.)

A large majority (85%, 651 people) said they would hope to switch to the PrEP IMPACT trial as soon as it started, ideally within the first month, while a mere 11 respondents said they would not switch and would continue to buy PrEP online, or stop PrEP.

Participants were asked to select from a list of sexual health clinics which one they would be likely to go to for PrEP. This gives an idea of respondents’ location. A majority (59%) said they would use clinics located in greater London, with 68% of those – 40% of all respondents – saying they would prefer to go to one particular clinic – 56 Dean Street in Soho.

In terms of other geographical areas, 114 participants (30 from Brighton) would use clinics elsewhere in the South East, 51 (34 from Greater Manchester) clinics in the North West, 44 in the East or West Midlands, and 22 in Yorkshire or Tyneside, with smaller numbers from the South West (mainly Bristol) and East Anglia (mainly Cambridge).

Preferred clinics, by region

While this survey may give an indication of where demand for PrEP is likely to be highest, it leaves some questions unanswered. One is how predictive it is of the total number of people who may come forward for PrEP when IMPACT starts. PrEPster and iwantPrEPnow estimate that, from other surveys and based on their contact figures, there could be over 8000 people using PrEP in England regularly or intermittently right now, which could imply that the 10,000-strong IMPACT trial, which is intended to last three years, could fill up very fast.

The other unanswered question is how to reach and interest the minority of people in need of PrEP who are not gay men: women with HIV-positive partners, recently arrived immigrants, transgender people and others known from the data to be at risk. It is striking, for instance, how few transgender people answered this survey, despite there being a dedicated clinic for trans people at 56 Dean Street.

Marc Thompson, co-founder of PrEPster said, "This survey reminds us that those who want to get PrEP as soon as the trial starts are those who are already engaged with PrEP advocacy. The survey doesn't tell us about how women, trans people, or people who are not white are currently using PrEP, nor how they might use it. It's another call to all of us with roots into those diverse communities to take action to ensure that they know about PrEP, and can access the trial."

The intention is that IMPACT will reserve 1000 places for people who are not gay men and projects will be developed to reach out to them. What happens if the trial fills up rapidly and there is pressure to fill the other 1000 places is a dilemma the trial oversight committee and its community advisory group will have to address.