That's interesting, Oliver. As you know, the vast majority of immigration to the UK is from other countries in the EU. (The celebrated Mrs Duffy from Rochdale knows that, because she said, famously, 'these immigrants from Eastern Europe - where are they flocking from?').
There is, of course, unrestricted free movement between member states of the EU. So as long as we remain members, we will not be able to place any limit on immigration from elsewhere in the EU.
So presumably your policy means that you favour withdrawal from the EU?