Parents of Briton killed in NZ call for tougher tourism regulations Those who died in the crash with Mr Coker were Patrick Byrne, 26, of County Wexford, Ireland, Glen Bourke, 18, from Australia, and Annika Schmidt, 23, from Germany, along with four tandem dive instructors and the pilot. In their letter, the four families express their "indescribable grief and anguish" over their loss. They say they consider an earlier report into the accident and the inquest findings to be "disturbing" and urge Mr Key to "take decisive and unequivocal action to reassure the world that New Zealand is a very safe place to visit." Among their requests are the introduction of stricter corporate liability regulations. Mr Coker's father Chris said the fact that nobody had been held accountable under New Zealand law for the tragedy showed a lack of intent to improve safety in the industry. "If you don't hold anyone to account, how on earth are you going to bring about a better level of safety?" he said. Mr Key, who is also the tourism minister, said he is "personally committed" to improving safety and that his government will urgently consider the coroner's recommendations. Adventure tourism is a big money-spinner for New Zealand but the industry's reputation has taken a knock in recent years after a series of tragedies, including the deaths of 11 people in a ballooning accident in 2012.