Publishing house Penguin has said it "undertook all the necessary due diligence" before releasing The Salt Path, after a series of claims about the book's veracity. A recent Observer investigation claimed English author Raynor Winn fabricated or gave misleading information about some elements of her 2018 non-fiction best-seller.

Penguin Michael Joseph has spoken about the recent allegations facing The Salt Path saying it “undertook all the necessary pre-publication due diligence” and that “prior to the Observer enquiry, we had not received any concerns about the book’s content”.