John Hughes is an award-winning ELT author with thirty years' experience of teaching and teacher training. He has worked with learners and teachers from all over the world and is a well-known conference presenter. For National Geographic Learning, he is an author on the course series Life, World English, Third Edition World Link, Fourth Edition, Success with Business, and Total Business. He's also the author of the methodology title, Critical Thinking in ELT. His website is www.johnhugheselt.com.

Helen Stephenson first taught business English in the 1980s. She has written in-house training courses and a course for upper-secondary students. She teaches at the Universitat Oberta de Catalunya.