Hi gregy901,
The new tax year commences 6 April 2024.
If you are not resident in the UK for the whole tax year 2024 to 2025, then foreign income arising in that period, is not taxable in the UK and should not be declared.
If you continue to have UK income while not resident in the UK, you may find that you need to complete a Self Assessment tax return.
You can check this here:
Check if you need to send a Self Assessment tax return
Thank you.