Chris Langley is a Professor of Pharmacy Law and Practice at Aston University, where he is also Deputy Head of the Pharmacy School and Associate Dean for Taught Programmes. He is a member of the Royal Pharmaceutical Society's Education Expert Advisory Panel, and has previously written several undergraduate pharmacy textbooks. Yvonne Perrie is Professor in Drug Delivery and Head of the Pharmacy School at Aston University. Her research activities contribute to the advancement and strategic development of drug carrier systems to facilitate the effective delivery and application of drugs and vaccines. Yvonne is Editor in Chief of both the Journal of Liposome Research and Pharmaceutics, and acts as Associate Editor of The Journal of Drug Targeting and The Journal of Pharmacy and Pharmacology. She is also the author of the undergraduate textbook Drug Delivery and Targeting.