Hi W Yuen,
We cannot confirm whether split year treatment applies, this is something that only you can do.
You will find the guidance on split year treatment at h
RDR3 Statutory Residence Test.
A tax return is required to declare split year treatment, as well as foreign interest.
You would declare foreign interest and tax deducted in a self assessment tax return, but only your share of the interest.
There would not be any tax implications to transferring the funds to your UK bank account, however, if the funds generate interest, then the interst is taxable and should be declared.
Thank you.