you would have to spend less than 90 days in the country to become non dom for tax purposes.I've gotten out of touch with this but I think that in order for you to apply for "non-domiciled" status, you have to prove that you are actually resident outside of the UK for a good portion of the year - as opposed to being a twonker who aimlessly goes off on pointless jaunts to shop.
smart (or rich) people are living between number of countries and never more than 90 days in one, or alternatively they live on a boat so that they can become “nomads” for tax purposes. Thats my aim in life