Penguin Books sold cheese through Woolworths and other high street stores.
Originally, every paperback carried the message, "FOR THE FORCES  Leave this book at a Post Office when you have read it, so that men and women in the Services may enjoy it too" at the bottom of the back cover, inviting the reader to take advantage of the Royal Mail's free transmission of books to the forces
 Complementary to the Puffin Club the Puffin School Book Club, addressed specifically to schools and organisations, grew significantly in this period helping to confirm Puffin market position such that by 1983 one in three Penguin books sold was a Puffin

