Acknowledgements -- List of boxes, tables and photographs -- Introduction -- Considering an applied visual sociology? -- Harm reduction and injecting drug use -- Methodology and methods -- Visual analysis -- Drug using environments as a "continuum of descending safety" -- Drug related litter as visual data -- The management of drug related litter in UK settings -- The value of applied visual data in "real world" settings -- Towards an applied visual sociology -- Practical exercises in applied visual sociology -- References -- Appendices -- Appendix 1: A harm reduction response to media reports of needlestick injury : drug related litter -- Appendix 2: Visual data evaluation template