https://www.theguardian.com/books/2020/jul/22/author-loses-spot-in-top-10-bought-400-copies-of-his-own-book-mark-dawson-the-cleaner

Mark Dawson’s purchase pushed his thriller The Cleaner up the Sunday Times chart, but the sales monitor Nielsen has now revised its figures

Author Mark Dawson has lost his Top 10 position in the Sunday Times bestseller charts for his thriller The Cleaner after revealing that he bought 400 copies himself to get a higher position.

Related: An author bought his own book to get higher on bestseller lists. Is that fair?