I cannot find the reviews and critical writing on "Not a Penny More, Not a Penny Less." Where can I find these?
Well, when dealing with popular authors like Archer, start by remembering that there may not be any well-developed critical writing on a specific work. (It may not exist.) I could not find any in some databases, such as Proquest or EBSCOhost. You may have to look up Jeffrey Archer criticism and apply it to this specific work. See, for example, "Are you suffering from: Jeffrey Archer syndrome" in "Management Today" or " PW talks with Jeffrey Archer " in "Publisher's Weekly," or a number of other articles on Archer.
That said, there are numerous popular reviews and treatments available online. You'll find links to several below, and the Wu review contains another link embedded within it to a British review.