Personal Income Tax

I possess British citizenship and maintain a Pakistani domicile, and I have been working in Vietnam for over ten years, during which I was not obligated to pay income tax in Vietnam. I'm interested in knowing whether I need to pay taxes in the UK when I transfer any of the income I earned from my salaries. It's important to mention that the UK and Vietnam established a double taxation agreement on April 9, 1994. The income I'm discussing was earned between 2016 and 2018, and it did not originate from the UK or a UK-based company.

Hi,
As a non domicile, please refer to:
Paying tax on the remittance basis (Self Assessment helpsheet HS264
Thank you.