The options are a possible challenge against the refusal if there are merits to do so. Otherwise, you could consider a tier 1 entrepreneur visa, which requires £200,000 investment into a new or existing business. You will require a business plan for the application. If successful, you will be given a three-year visa. Within that time, you will need to employ at least two new full-time employees who are settled in the UK or are British citizens in order to get an extension of your visa. Another alternative is a graduate entrepreneur visa, which requires your university to endorse your business idea and you will need to have a business plan in place. This is a very basic overview of the options, but there are other visa possibilities too, although much of it depends on your circumstances and further instructions will be needed.
