Allan is the Managing Director of J H Cockerell, specialist aquatic engineers, an Australian based company founded in 1976 with his father. For almost 50 years, Allan has been involved in the design of Australian public pools and their water treatment plants. He has worked with State Health Departments in an effort to significantly improve their guidelines for water quality in public pools and in so doing highlight the importance of using the DIN 19643 standard. In recent years, much of his work has been audits and reports on a wide variety of substantial public pool design defects such as: inadequate water circulation in pools, ineffective filtration, substantial pool water loss and non-compliance of pools with FINA standards.