It’s worth having a read of the Naked Sprout response to the Which? article highlighting issues with the test. My point still stands, if you can choose recycled, locally sourced toilet paper nakedsprout.uk/blogs/news/our-response-to-which-article
You can do a lot of damage to a company if you publish a test that is wrong. I have no idea but I have just felt my first bamboo toilet roll and it is one on your list and I have to say it has a different texture to toilet paper from Asda, in the same way that my bamboo socks feel unlike my cotton ones. I am a member of Which? and I have known them get things wrong from time to time. So I am undecided and would like to see the results of a DNA analysis.