Total Scuba - Learn Scuba Diving Now In Cardiff. Are you looking to learn Scuba diving in Cardiff Wales UK, Total Scuba has been developed due to the high demand for Scuba training and Scuba development in Scuba skills. Robert Sutherland, Master Scuba Diver Trainer and offers a wide range of developmental courses. Open Water Diver; Adventures in Diving and Advanced Open Water Diver; Rescue Diver and Emergency First Response Courses