As a general rule, it's not hard but the rub is what you note: the new position needs to be in the same or similar occupation as the previous position and altho

As a general rule, it's not hard but the rub is what you note: the new position needs to be in the same or similar occupation as the previous position and although porting to your own company or self-employment is allowed, you must be prepared to show evidence of your ongoing active present and future work - such as contracts/revenues - with your new venture.