It's definitely not common in the UK; the only time I have seen it over the past few years is the CVs of continentals applying for jobs (particularly in London,

It's definitely not common in the UK; the only time I have seen it over the past few years is the CVs of continentals applying for jobs (particularly in London, since there are many more Europeans settled there, and usually Germans). Marital status and driving license status is common; NI number not so much (but it's not as valuable as a SSN). Citizenship is definitely important; employers are on the hook to ensure the right to work.