other definitions exist but space precludes further discussion we will discuss the composition of the tourism supply chain in more detail later this will be explored with reference to the case studies and the key questions that refer to what local supply chains exist who the main players are what level of contribution is made along the supply chain and where possible the level of local supply and procurement along the tourism value chain it examines the chain of expenditure and transactions of a commodity and identifies the agents involved as it flows from production to consumption