James Grime, from the University of Cambridge, introduced a large WP audience to codes and their history (from shaving a slave’s head to sending credit card details across the internet), and then demonstrated an original Enigma machine (see right). It was an engaging and fun session, and led to an interesting discussion on the use of codes in the Second World War, and finally to a code-breaking workshop where our students broke, or attempted to break, various encoded messages. A great start to the WP year.