HMRC Admin 10 Response

Hi Frank Bough
The guidance for split year treatment can be found at :
Residence, domicile and the remittance basis: RDR1
and the SA10 notes can be found at:
Residence, remittance basis etc notes
The notes will help you complete the relevant boxes to claim split year treatment.
Thankyou.
Regards.

Hi Ben Leung
You can contact the self assessment helpline on 0300 200 3310 and after passing the security questions, we will be able to look at this for you.
Thankyou.
Regards.