Dr RS Bridger is a past president of the Chartered Institute of Ergonomics and Human factors in the United Kingdom. He is an experienced consultant and educationalist in human factors and ergonomics and has supported safety investigations in the UK in health care and in the maritime sector. He offers on-line training in many areas of human factors and ergonomics via his company, ‘Knowledge Sharing Events Ltd.’ He is the author of several books: the textbook, ‘Introduction to Human factors and Ergonomics’, now in its fourth edition; and ‘A Guide to Active Working in the Modern Office’ both published by CRC Press and ‘Introduction to Human Factors in Accident Investigation’ which is available worldwide on Amazon and for academic libraries from Kortext.