tax relief on gift aid donations from previous years

I am filling out my tax return for 2023-2024, and wondered if I can include on it gift aid donations on it that I forgot to include on previous returns. If so, how many years back can I include; and if not, is there another way of claiming the tax relief from previous years? Thanks for your help.

Hi P T,
You will need to amend your previous years tax return.
You can do this online in your persional tax account or by submitting an amendment in writing please see the guidance here: 
Self Assessment tax returns
Thank you.