Hi,
To report 'Interest from gilt-edged and other UK securities, deeply discounted securities and accrued income profits', you declare them on SA101 page Ai1, boxes 1 to 3. You can see guidance here:
Additional information (2024)
Additional information notes
For an online returns, when tailoring your return, you tick 'yes'on page 2 of 3 for "Did you receive any other UK income, for example, employment lump sums, share schemes, life insurance gains?". When filling in your return, in the other UK income section, tick 'yes' to "Interest from gilt edge and other UK securities, deeply discounted securities and accrued income profits.
Thank you.