To extend under the Tier 1 Investor category, you must meet the requirements of the extension and score enough points under this category. You can apply for an extension if the following requirements are met:

• already in the United Kingdom under the tier 1 investor category and want to extend your permission to stay within your existing category; 
• already in the United Kingdom under the former investor category and want to extend your permission to stay and are eligible to switch into the tier 1 investor category.

You must be in this category to apply for an extension. If you are on a different category and wish to remain in the UK, you must apply under the initial application route. If you are given leave to remain (permission to stay) as an investor from inside the United Kingdom, you will be able to live and work in the United Kingdom for a maximum period of three years. When the end of this period approaches you will need to apply to extend your stay.