Indefinite Leave to Remain (ILR) is a type of immigration status in the UK that allows non-UK nationals to live and work in the UK for an indefinite period. It's also known as permanent residency.

To be eligible for ILR, the individual must have lived in the UK for a certain period of time, depending on the type of visa they hold. Generally, this is a minimum of five years on most work visas. Additionally, the individual must meet other requirements, such as passing an English language test and not having a criminal record.

Once the individual has obtained ILR status, they can live and work in the UK without any restrictions on the duration of their stay. They can also leave and re-enter the country freely.

It's important to note that ILR status can be lost if the individual spends too much time outside of the UK or commits a serious criminal offence. Therefore, it's important to maintain the requirements of the visa in order to keep the permanent residency status.

ILR status can also be a pathway to British citizenship. After living in the UK for a certain period of time with ILR status, the individual may be eligible to apply for British citizenship, which provides even greater benefits and opportunities.

Overall, obtaining Indefinite Leave to Remain UK status can provide long-term stability and security for individuals who wish to live and work in the UK on a permanent basis. It's important to carefully consider the requirements and implications of the ILR visa before applying.