When the correct data is made available and published at some point , do you think migrants will be over represented in the crime statistics ? If so to what degree ?
The first link I gave you was about foreign born people in prison. The person analysing accepted that the figures for the prisoners were correct, as that's currently available to check. The Home Office already release this information.
The second link I gave, to the CMC report, used FOI requests and they said they received replies from almost all police forces, so I don't doubt that those are correct. I believe it's this data that the Home Office are going to start publishing.
What was wrong in each case, is that they've used the wrong population data - that first report thought there were only 2000 Somalis in the country, so the fact that 250 were in prison was shocking. Of course, 250 out of the actual figure of 178000 isn't quite so damning. That data is currently easily available from the ONS.
So, the correct data for those two stats are already in the public domain, and they are nowhere near as dramatic as the stats you showed. The link I gave about foreign prisoners, even suggests that foreign nationals are LESS likely to be in prison than British people.