Tax rules for Fixed Rate Bonds of 2 years or more that pay out all the interest on maturity

I am confused as to how to declare the tax on Fixed Rate Bonds where the interest is re-invested each year and only paid out (in full) at maturity. Should the annual tax return declare that year's interest re-invested in the bond or should it all be declared in 1 lump at the end of the term with zero declared in the initial year(s)

Hi,
The full amount of interest should be declared in the year of maturity as you cannot access it prior to this.
Thank you.