Hi Anton,
As you will be receiving your uprated pay and bonus in your last wage of the 23/24 tax year, you should not be over-taxed.
If you do overpay tax, though, this should be refunded to you when your overall 23/24 tax liability is calculated, which usually happens around May. Please note, if your overall pay exceeds £100,000, you may be required to complete a Self Assessment return.
Please contact us by webchat or phone here:
Income Tax: general enquiries
For more advice.