For Income Tax and Capital Gains Tax purposes, whether or not you’re domiciled in the UK may affect what UK tax you pay on any foreign income and gains during a tax year.
If you’re UK resident but are not domiciled in the UK, you may have to pay UK tax on any income and gains which arise or accrue here. You can choose to pay tax on your foreign income and gains using the remittance basis of taxation. You normally acquire a domicile of origin from your father when you’re born (see also ‘domicile of dependence’). Domicile can change for a number of reasons and you could be considered as 'deemded domiciled'.
The remittance basis is an alternative tax treatment available to people who are UK resident but not domiciled in the UK and who have foreign income and gains. You should review the guidance which can be found at the link below, to help decide how long you can claim the remittance basis.
Guidance note for residence, domicile and the remittance basis: RDR1