I have no idea why I have my address. Thanks for pointing that out, will definitely remove that in future. I guess it's at least useful for companies to know which country I am currently residing in.

I've heard mixed things about personal details including age, gender and nationality. Some argue that it's a problem for companies with regards to abiding with discrimination acts (especially US). I include nationality as most of my applications are abroad and my nationality gives some indication of visa requirements.