I'm just wondering if this is common practice? Obviously, if an employer is going to hire you they need proof that you can legally work in the UK, but if the potential employer does actually intend to hire you, do they have the right to take a copy of your passport? I have been to a few interviews recently where they have done this. In the first instance, I assumed it was because they were planning on hiring me, but apparently this is common practice. In not sure if I feel comfortable with a company holding copies of my legal documents.
YABU - This is common practice
YANBU - They shouldn't keep your documents before starting the employment process