If you have your permanent home outside UK and you live in the UK, then you have to decide about your tax matters at the earliest. You will have to decide about how to pay the income tax over the taxable income and gains that you earn abroad. For instance, if you sold some property, umbrella company or investment, then you will make gains from it. You will have to pay tax on that gain. You will have options how you want to pay the tax. The important thing is to choose wisely so that you end up paying lower taxes in the long run.
If you are living in the UK, then you will be considered a resident in most of the cases. Remember, this only applies to taxation and not to your citizenship in general. Nevertheless, you will have a domicile from the country of your permanent residence. You will be considered domiciled abroad in such cases. In order to fall within this category, you and your parents should have born abroad and you should be living in the UK for most of your time. You should also intend to return to your home abroad in future to fall within this category. Moreover, those not having permanent residence abroad will not fall within this category.