Borders, Citizenship and Immigration Bill [HL]

My Lords, three years ago we introduced personal passport interviews for folk applying for a passport for the first time. About 300,000 applicants have had to have a personal interview before being issued with a British passport. I have heard that, after 246,000 interviews, not one applicant had been refused. Did the Government not introduce personal passport interviews in order to prevent this from happening? Has any evaluation been made of the effectiveness of the personal passport interview? If so, could that information be published in order to let us know whether the interviews have been any help in eliminating dual passports, terrorism, fraud and whatever else they were set up to do?