“…Drug use is common on gay commercial scenes in several major international cities (Bauermeister, 2007;Fernandez et al, 2005;Keogh et al, 2009;Mattison, Ross, Wolfson, & Franklin, 2001;Theodore, Duran, & Antoni, 2014), however in London there appears to have been a recent shift in the types of drugs that are commonly used and the settings within which such use occurs. While 'club drugs' such as ecstasy or cocaine had previously been those popular (Bourne et al, 2014), there has been a rise in the proportion of gay and bisexual men presenting to drug clinics for problems related to three newer substances: mephedrone, gamma-hydroxybutyrate/gamma-butyrolactone (GHB/GBL), and crystal methamphetamine (crystal meth) (Stuart, 2013).…”