Depending on how you invested your funds, there should be an exist policy in the contract. However, once you withdraw your fund within three years of the investment period, you will breach the visa condition. Failure to comply with the conditions may result in the visa holder becoming liable for deportation under section 159 of the Immigration Act 2009. You can start a business within the three years' time, though you will need to source funds from elsewhere. Taking out a commercial loan may not be a bad idea to claim interest as business expense for some tax benefit.
