The minimum investment required for a UK business visa depends on the visa type. For the Innovator Founder Visa, applicants must demonstrate access to at least £50,000 in investment funds. These funds must be used to establish or grow an innovative business idea in the UK, endorsed by an approved endorsing body. Unlike the previous Tier 1 Entrepreneur Visa (now closed), this route focuses on innovation, scalability, and viability. For short-term business visits under the Standard Visitor Visa, no minimum investment is required, but applicants must show sufficient personal funds to support their stay without accessing public funds.