Front -- Contents -- Introduction -- Approximating the truth about crime -- Comparisons between victimisation or self-reported crime surveys and official statistics in France1 -- Comparing crime data of different sources: the German situation -- Comparing police data and victimisation surveys in Italy -- Comparing crime data in the Netherlands -- Comparisons between survey estimates of crime and crimes recorded by the police: the UK position -- Comparisons of crime data based on general population surveys with criminal statistics in Switzerland -- On the authors