Hi riy87
Regardless of whether you are UK tax resident or not. The UK has the right to tax any income from property that is located in the UK.
This is declared through a self assessment tax return every year. The HMRC online version of the tax return, does not support the residence section, so cannot be used to sumit a tax return.
In this situation, you must submit SA100, SA105 & SA109 on paper in its entirety.
You can download the form at
Self Assessment tax return forms.
If you have a government gateway user ID and password, you can choose to buy a commercial tax return that supports the residence section.
You complete the commercial tax return and submit it using the user id and password. If you cannot obtain a government gateway user ID and password, the commercial tax return option is not available.
You can find a list of commercial suppliers at
Self Assessment commercial software suppliers
Thank you