“…Gay, bisexual, and other men who have sex with men (MSM) continue to be one of the highest risk groups for HIV in the UK and globally , and experience a significant burden of ill health and harm through the use of alcohol, recreational drugs and tobacco (PHE, 2015). Recreational drug use in MSM and the associations with sexual-risk behaviour has been documented on an international level (Heiligenberg , 2012;Prestage, 2009, Pappas, 2011, Santos, 2013Colfax, 2006;De Ryck, 2013;Drumright, 2007;McCarty-Caplan, 2014) and is an important public health consideration in Western Europe (EMIS, 2010), particularly the UK (Kirby, 2013;Hunter, 2014;Daskalopoulou , 2014;Bolding, 2006;Home Office, 2013/14), where transmission of HIV and other sexually transmitted infections (STIs), remain high (Public Health England, 2014a). A 2014 report described the use of psychoactive drugs in sexual settings among MSM in London (Bourne, 2014).…”