As I've said before I am just to make deeper analise of this phenomen and it is very good argument against some newspapers in the UK.
With all due respect, you may well have analysed something deeply (or was it quickly?) but your argument is feeble. Infact, what is your argument, it's not clear from your post.
Are you trying to use the data on the Home Office website to refute some peoples' claim that crime in England has risen since the arrival of the Polish?
Whilst the Daily Mail is not a paper worthy of much notice, unless you form your letter considerably better than your first post above, they will not only ignore you but you will probably reinforce their negative stereotypes of the Polish.
Is that your intention, or did you want to be taken seriously?