Hi,
Please have a look at the guidance on non resident trusts at:
Non-resident trusts and in particular, the section for ""How much you should pay if you are a beneficiary".
It advises:If you’re a UK resident beneficiary of a non-resident trust, you may need to complete a Self Assessment tax return and the SA107 supplementary pages.
As you commenced receiving income from the trust in 2021/2022, a tax return will be required for each tax year from 2021/2022 onwards, for as long as you receive the trust income.
Thank you