The role is for an intern on Peston on Sunday (ITV) - they're using Creative Access, because they champion the minorities to attempt to ensure diversity in the workplace. Rather than post this advert in the Express/Mail/Sun, where you would see exactly the type of responses NSC have been...
This was my opinion, but sadly there is an incredible amount of unconscious bias in the workplace. This advert is specifically addressing a problem they have which is that they are underrepresented in those ethnicities in their workforce.