Independent publishers have expressed their frustration at a lack of communication from Bertrams over unpaid bills, with some owed as much as £15,000.
Hannah is senior publicity manager at Scholastic.
James Keyte is senior commissioning editor, Audio at Penguin Random House.
Spanish author Carlos Ruiz Zafón, whose novels include bestseller The Shadow of the Wind, has died at the age of 55.
Anthony McGowan and Shaun Tan this week won the CILIP Carnegie Medal and Kate Greenaway Medal respectively for their books.