I have been in England,London ,for 11 years, from 1995 until 2006 waiting for British citizenship and passport.I was told that I have to spend 14 years in England without leaving the country if I want to get British citizenship and passport, although some people got it after 10 years.Because of my father's death and my family problems I had to return to Serbia in 2006 and in order to be able to do that I had to sign some papers in the Home Office.I have permanent National Insurance Number, but I have not been granted in-definitive leave to remain.I would like to go back to London, but I do not know do I have any rights and can I work on my permanent national insurance number or I need a work permit. What would be my status in the UK, do these 11 years count? The whole situation is confusing and not clear to me. Could someone help me and give me the answer to my problem? Thank You.