The UK Business Visa fee varies depending on the type of visa and the applicant's nationality. For a Standard Visitor Visa, the application fee is around £95. For longer-term visas like the Innovator Visa, the fee is approximately £1,021. Additional costs include biometric fees, English language tests, and potential legal or processing fees for business owners or investors. It’s important to review the specific visa type's cost, as well as other potential expenses involved in your application.