Dual residency self assessment

I am a dual tax resident of the UK and another country with a dual taxation agreement. I am employed by a UK company and pay UK income tax automatically. However, the tie-break questions determine that I should pay tax in the other country instead. After completing the self-assessment and claiming UK tax relief, will my UK tax code change so that I no longer automatically pay income tax in future? Will my company be aware that my tax situation has changed or at least changed for the previous year?

Hi Cherry,
You would need to include the HS302 with your tax return so that this can be verified and then telephone to have your tax code amended going forward.
Here is a link to the guidance for HS302
Dual residency (Self Assessment helpsheet HS302)
Thank you. 

Thank you for your reply. So if I don't telephone then my tax code will stay the same? Since I might want to keep it as is for the following year. And in that case my company would be unaware of any tax changes?

Hi Cherry,
That is correct.
Thank you.