I should point out that the Daily Mail story Cerb cited appears to use enumerated figures of actual crimes reported, yet it closely mirrors the International Crime Victimization Survey, which uses surveys and, thus, can account for unreported crimes. The ICVS refers to what we generally would call "violent crimes" as "contact crimes" and there might be a slight disparity between definitions, but the two analyses seem to generally support each other. A quarter of English are victims of crime - Telegraph (Note this is a pretty old, but useful link. It used to have some excellent graphs )