Crime and Security Bill

Of course that approach would not have led to any such detriment, and I presume that that research was done two years after it was introduced. That is not the question. If we believe that those who are arrested but not convicted have a greater propensity to be re-arrested, as the hon. Gentleman obviously does given that the Conservative policy is to retain data on the DNA database for those accused of committing serious offences, the question is whether their data should be retained for three years or six years. The quote that he gave does not relate to that matter at all. Other independent, peer-reviewed evidence and research that has come along since suggests the need for a six-year period, and he simply cannot ignore it.