You will need to review your residence and domicile and whether the remittance basis applies.
Residence, domicile and the remittance basis: RDR1
If you are resident or domiciled in the UK, you need to report the shares on your SA return.
If you are resident, but not domiciled, you need to consider the remittance basis. If you remit the income to the UK, it is taxable and should be recorded on your tax return.