For info, DASA (The Defence Analytical chaps) have done a study into this, and the results are at: http://www.dasa.mod.uk/applications/newWeb/www/index.php?page=48&thiscontent=540&date=2010-01-25&pubType=3&PublishTime=16:00:00&from=home&tabOption=1 In summary: "The aim of this study was to estimate the proportion of prisoners in England and Wales who are ex-Armed Forces by matching administrative datasets held by the MOD and the MoJ. A database of all prisoners in England and Wales on 06/11/09 was matched against a database of Service leavers (Regulars only, going back as far as records are available) using name and date of birth............. ............Although this is the most comprehensive study to date, it is dependent on the quality and completeness of the administrative databases used. In particular, this study will not have captured those who left Service before 1979 (Navy), 1972 (Army) and 1968 (RAF), and so is a lower estimate. Further work is planned during 2010 to estimate the impact of excluding Service leavers prior to the aforementioned dates. We do not expect that a revised estimate would exceed 4%." There you have it. As a maximum, around 4% of those banged up are ex-Forces. I reckon this works out to be around 3,400 in a total prison populaiton of around 85,000. I've no idea of the significance of this figure - it just seems a lot to me, given how few ex-Forces there are about these days. I just thought that this work deserved a bit of a more public airing than just hiding on a Government website.