Declare Uk Gov Bond Interest

Please confirm how I would report some uk Gov Bond (Gilt) coupon payments when I am not required / do not qualify for self assessment? Can I do this in writing or online via my personal tax statement “add missing investment income”? I use my personal savings allowance use used up via my bank accounts but I received about £100 in gilt interest via a uk broker. I would want to pay tax on this small amount and would like to know how when I do not need self assessment. I am paye, uk resident and basic tax payer. I have savings in bank accounts which exceed my personal allowance. Thanks

Hi,
Please refer to:
HS343 Accrued Income Scheme (2024)
Thankyou.