Here's what people have said about working and interviewing at Primark.
After applying once, I had got log in problems, even security questions were rejected as well, then I changed the email address and it worked. But after applying with this new address when I went back to this later on, I had again login problems. so now third time I changed my email address and it is okay the now. So I would suggest keep on changing your email address
Go to primark recruitment web page. you will need to do a test online which is easy as soon as you pass the test they will call you in for an interview.