Now I see that the paperback edition of The Secrets of CEOs - the book he co-authored with Telegraph hack Andrew Cave - is being released.
Tappin's latest biography on Amazon reckons he's a "confidant and sparring partner to ten of the FTSE50 CEOs and their main boards on business performance, leadership and talent." Meanwhile, the jacket of the new book says our man's "the world's leading authority on CEOs".
Lofty claims. I do hope he can back it all up (this time).