Indefinite leave to remain is a form of permanent residency, granted to non-UK citizens. This form of residency has no time limit, and its main advantage is free movement. In this article, we will look at the qualifications for this status and the exceptions. We will also look at how long indefinite leave to remain lasts. This visa is the most popular option for those looking to work in the UK. But be aware that not everyone who applies for it will be granted indefinite leave to remain.