Dieselpus

Please clarify: I can’t carry forward 3 years contributions into my SIPP if I only receive Interest income?

I don’t pay Income Tax, but I receive Interest on my Savings at the Higher Rate. I have a SIPP that I haven’t contributed to for over 4 years. I believe I can contribute £2,880.00 in to my SIPP in the current tax year. Questions: Can I carry forward an additional 3 years contribution into my SIPP? Can I claim Tax Relief on the 4 years contribution?

My only income is bank interest and I am a higher rate tax payer. Can I claim tax relief on my Gift Aided charity donations?