Benefit in kind, taxed twice

My pay slips have medical and dental insurance with comment to say these are notional benefits received but not paid. I have summed these and entered on self assessment as taxable benefits. I now think I should not have done that as tax for these will already have been paid through payroll deductions. Is that correct?

Hi,

If your employer has payrolled your medical and dental insurance, you do not need to declare these benefits on your return.

If you filed your return through your personal tax account, you can reopen your return and remove the amounts declared.

Thank you.