This is a 12-month, dual arm, phase 4, open-label, multi-centre study examining the implementation of LA intra-muscular (IM) drugs in clinics and decentralised community-based settings in the UK.

Cabotegravir and Rilpivirine (CAB+RPV) LA, is recommended in European US and British guidelines as a treatment for HIV-1 that allows PWH to receive a two-monthly injectable treatment, rather than daily pills. Providing injectable therapy in a system designed to provide and manage patients on oral treatments poses logistical challenges namely how resources are used to accommodate patient preference within a constrained health economy with capacity limitations. Exploring the use of alternative settings for injection, including community-based settings to deliver CAB+RPV LA, has the potential to expand options and potentially improve clinic capacity. Many PWH report high levels of stigma when attending the HIV clinic which can affect engagement with care, so receiving care in a community setting may provide additional choices and the possibility of receiving treatment in a less medicalized setting. Implementation studies in Europe are also assessing this in their countries.

The National Health Service (NHS) in the UK is a very specific health environment where people are entitled to treatment and care which is free at the point of delivery. Unlike other medical specialties where primary care physicians are responsible for prescribing treatment for chronic conditions, PWH are managed and receive their HIV treatment in HIV and sexual health clinics. For the circa 105K people with HIV in the UK, outcomes are excellent. More than 95% of those on treatment have undetectable viral loads. However, around 8100 people in the UK are not able to take oral ART successfully. US guidelines have specified that LA CAB+ RPV is particularly important for those who experience pill fatigue, stigma and have fears of inadvertent disclosure. This is highly relevant to the ethnically diverse population of people in the UK living with HIV, many of whom come from marginalized and minoritized communities in which stigma is rife and in whom the treatment outcomes are the poorest. Women, racially minoritized people and older people are chronically under-represented in HIV clinical trials which is why we have set recruitment caps to ensure we recruit 50% women, 50% ethnically diverse people and 30% over 50 years of age. This is to ensure that we go beyond lip-service and hold ourselves to account in designing our trials with peer researcher involvement from the outset and committing to include a more representative study population. We will achieve this by engaging actively with community organisations to ensure awareness of this implementation trials.

The study will be conducted at six large clinic sites both in London and outside of London. In this pragmatic real-world trial, each site will identify the most workable option to deliver of CAB+RPV LA according to SmPC license in the community setting within their region or borough.

Inclusion Criteria:

• ≥ 18 years of age
• Documented HIV-1 infection
• Virologically suppressed (HIV-1 RNA <50 copies/ml) on a stable antiretroviral regimen
• Able and willing to complete informed consent prior to inclusion
• No hepatitis B
• In accordance with EU license and NICE guidance

Exclusion Criteria:

• Based on contraindication for CAB LA, RPV LA, in accordance with EU license and NICE guidance
• Prior virologic failure on substances of NNRTI or INI class
• Resistance mutations to any substance of the NNRTI or INI class
• Prior exposure to CAB + RPV LA

108 stable, virally suppressed PWH.

To achieve representation of underrepresented groups in HIV studies, a cap will be set on recruitment of men at 50%, white participants at 50% and age under 50y at 70%.