“…More methodologically robust research is needed to determine fully whether peer interventions in prison are effective, as concluded by a recent systematic review published in this journal (Wright et al, 2011). Empirical evidence does exist, however, that demonstrates positive impacts of peerbased programmes on certain health outcomes, including: prisoners' knowledge of HIV (Collica, 2002, Scott et al, 2004, Bryan et al, 2006, Ross et al, 2006 and uptake of HIV testing (Zack et al, 2013); knowledge of sexually transmitted infections (Sifunda et al, 2008); beliefs, intentions and reported increases in condom use (Magura et al, 1994, Grinstead et al, 1999, Bryan et al, 2006; and increased inclination to practice safer drug using behaviours (Collica, 2002). Moreover, some have argued that peer schemes have been instrumental in reducing suicide and self-harm in prisons (Snow andBiggar, 2006, Samaritans, 2012).…”