Hi,
As you have already determined your residency position for tax purposes, you will need to confirm if split year treatment applies.
Have a look at the guidance notes at RDR1 (https://www.gov.uk/government/publications/residence-domicile-and-remittance-basis-rules-uk-tax-liability)
and then take the test at RDR3:
RDR3 Statutory Residence Test
If split year treatment applies, you will need to declare this in a self assessment tax return.
If split year treatment does not apply, you will need to declare your UAE earnings, converted into pounds sterling on a self assessment tax return (SA100) and SA106 (foreign).
You will also be able to claim a foreign tax credit relief.
Thank you.