Yes, you can extend certain types of UK business visas, but it depends on the visa category. For example, the Standard Visitor Visa cannot usually be extended beyond 6 months, except in exceptional cases. However, visas like the Innovator Founder or Global Business Mobility visas can be extended if you continue to meet the eligibility requirements, such as maintaining business activity, securing approval from an endorsing body, or having a valid sponsor. Extensions must be applied for before your current visa expires.