RSU Granted when non resident vesting while resident

I moved to the UK for the first time in June 2023. I have been working for different entities of the same US company for four and a half years. Throughout my employment I have received RSU from my employer, these have been granted each year and vest quarterly. How do I account for income tax on RSUs that were granted when I lived outside the UK but vested while I’ve been living in the UK? Is this done on a pro rata basis?

Hi
As the payment is from your employer, the income should be shown in the employment section if it is included in your P60. You would then claim credit for the Tax in the foreign section under 'Employment, self-employment and other income which you paid foreign tax on'. If it's not included in your P60, please include it on the box on the employment page for 'Tips and other payments not included on your P60'.