Marguerite has been associated with the Diving Diseases Research Centre (DDRC) since 1989 and specialises in field data – real world information from divers – until recently focusing on the effects of diving on women. Other topics have included diving and asthma, diving with diabetes, reverse dive profiles and flying after treatment for DCI. She was awarded the BSAC Duke of Edinburgh Prize for research in 1994 and again in 2006, being the only person to awarded the accolade twice. In 2006 she received the European Underwater and Baromedical Society’s Zetterstrom Award. Current research projects include studies into the general health of divers which also looks at the use of physician prescribed, over the counter, and recreational drug use in divers; and a separate study is investigating the reasons for delay in seeking help and treatment for decompression illness.