The UK investor visa, also known as the Tier 1 Investor visa or UK Golden Visa, is a residence-by-investment program that allows high-net-worth individuals to obtain residency in the United Kingdom. The visa is designed for individuals who are willing and able to make a substantial financial investment in the UK. However, it's important to note that as of February 2022, the Tier 1 Investor visa scheme has been discontinued. Prior to its closure, the visa required applicants to have at least £2 million in funds, held in a regulated financial institution, that are freely transferable to the UK and convertible to pounds sterling. The visa allowed investors to work, study, or engage in business activities in the UK. It also offered the opportunity for settlement in the UK after a certain period of time. It's recommended to consult official government sources or seek professional advice for the most up-to-date information on investor visa options in the UK.