If you’re settled in the UK (known as ‘indefinite leave to remain’), your document will usually be valid for up to 10 years. If you’re 15 or under and settled in the UK, it will usually be valid for up to 5 years. If you have permission to stay (known as ‘leave to remain’) your document will be valid until the end of your permission to stay in the UK. Your document may be valid for a shorter time in some cases. For example, because your previous document has been lost.