Buy registered UK Permanent Residence documents online. The Uk residence permit card is the necessary authorisation document to allow non-EU nationals to stay legally within the United Kingdom territory. You will need your UK biometric residence permit showing that you have valid leave for the UK that extends beyond your trip, and a UK VISA in your current passport. You can not apply using a travel document unless you have indefinite leave to remain (ILR) in the UK.
Indefinite leave to remain (ILR) or permanent residency (PR) is an immigration status granted to a person who does not hold the right of abode in the United Kingdom (UK), but who has been admitted to the UK without any time limit on his or her stay and who is free to take up employment or study. When indefinite leave is granted to persons outside the United Kingdom it is known as indefinite leave to enter (ILE).
A person who has indefinite leave to remain, the right of abode or Irish citizenship has settled status if resident in the United Kingdom (all full British citizens have the right of abode).
Indefinite leave is not a permanent status. It can lapse where the holder has stayed outside the United Kingdom for a continuous period of more than two years.
Settled status is central to British nationality law, as the most usual route to naturalisation or registration as a British citizen requires that the applicant be settled in the UK. Settled status is also important where a child of non-British citizen parents is born in the UK, as unless at least one parent has settled status the child will not automatically be a British citizen.
A temporary residence permit is required to extend a stay past some threshold, and can be an intermediate step to applying for permanent residency.