You asked

I want to know how many new businesses were registered between the period for which data is available. But I also want to know how many of these businesses were registered by people who are citizens of other countries in the union.

In other words:

  • Number of (newly) registered businesses for the available period
  • Number of (newly) registered businesses for the available period, broken down by the owner's citizenship

We said

The Office for National Statistics (ONS) produces an annual publication on business births, deaths and survivals, which is called Business Demography. Please see link for details.
http://www.ons.gov.uk/ons/rel/bus-register/business-demography/2014/index.html

Unfortunately, we are not able to identify the citizenship of the owner. This information is not held in the administrative sources that are used to compile this data.