I don't think it's unreasonable to have the data published, and openly discuss the issues in collection, analysis, and within the justice system. If the data is being collected by the government, they should publish it and the purpose and uses of that collection.
I'm not sure how we would ensure "immigration processes to prioritise women's safety" purely on this type of data and without some of the issues we've had before with immigration laws claimed to be for one purpose, but did no such thing (and likely put in for entirely different reasons). When the age for a marriage visa was raised above the age for marriage, it was claimed to be for women's safety in preventing forced marriages of young women, but in the years with the higher age, there was no evidence it did that. It largely prevented young people from Anglo countries who married Brits, and I believe it ended up being scrapped as age discrimination. Better direct laws and practices came in that have done far more than messing indirectly with the immigration system.
If we make it harder based on some countries of origin or by sex, there will be questions under the Equality Act, and there will likely be far better ways to handle the issue than messing with the immigration system.
People who are British by nationality.
Then we're not looking at crime stats by country of origin, but by nationality - one can have a nationality of a country one has never been to through parents or, in Ireland's case, grandparents.
I'm British by nationality, because I naturalised. My country of origin isn't the UK and it would not be listed as such in correct data.
As much as people make jokes, I do think i would be interesting to see how those originally from countries like the US line up with others. Remarks are often made about how it's foreigners from countries where women are not respected and have fewer rights, it would be interesting to see how strong that correlation is.
Your first nationality. It’s not about where you were born but where you were first registered as a citizen.
It's still a little more complicated than that - for obvious example, Boris Johnson's first nationality would be American, due to where he was born and he would have to been registered as a US citizen first; however, by birth he also had the right of British citizenship due to his parents and British laws. He got rid of his US citizenship. Which should we count his country of origin as? It would likely depend on who is giving or collecting the data and if they allowed multiple countries to be included. There will always been some issues like this with this type of data.