Tourism Holdings Limited usually called 'THL' and formerly known as The Helicopter Line is a New Zealand tourism company that has been listed on the New Zealand Stock Exchange since 1986. The company began as a scenic helicopter sightseeing business and grew by acquiring new businesses and diversifying. The thl business is now much different from its early years - in 2007 an extensive asset sale programme began, followed by various mergers and acquisitions in 2010–2012. It is now the world's largest provider of commercial RV rentals with rental operations in New Zealand, Australia, United States, Canada and the United Kingdom/Ireland. Wikipedia