Thank you so much for your replies! Phew, I'm very relieved to hear that CSI is not a problem anymore and that P60's are enough to prove residency. But yes, I do see the problem with the COVID-19 absences. I left in March 2020, just before the whole world shut down, and thought I could return a few ...

Little update:
Just managed to get a P60 for the tax year ending April 2018 with my address on it.

Hi all, I found this forum last night and reading through the posts has been so helpful in understanding the process of naturalisation. I am currently in the process of putting together my own application for naturalisation, but have run into some issues that I would like to share. Nationality: EU U...