A further example is Nasser’s study of the conflict between tourism, conservation and sustainable development.The study found support in the literature for long-term planning and community participation but it fails to confirm this with empirical evidence. Wilson and Boyle examined inter-organisational collaboration at 12 World Heritage Sites in the United Kingdom. Though limited in scope, their findings suggest collaboration is underutilised in the management process. While these authors provide useful insights, they do not explicitly consider the relationship between heritage and sustainable development.