considered two of the 'Big Six' publishing companies prior to the merger, which became the 'Big Five' upon its completion. The European Union approved the Penguin Random House merger on 5 April 2013. Imprints Penguin Group imprints include the following: See also The other 'Big Five' English-language book publishers: Hachette, Holtzbrinck/Macmillan, HarperCollins and Simon & Schuster Amazon Breakthrough Novel Award Pearson Education Penguin Group (USA) Inc. v. American Buddha References External links Book publishing companies based in London Publishing companies established in 1935 British companies established in 1935 1935 establishments in England Bertelsmann subsidiaries Penguin Random House de:Penguin (Verlag)