“If we don’t have a unified approach to Peru as a destination we can’t be competitive in the long term.”    Machu Picchu is Peru’s most popular tourist destination.   But a continuing dispute over the buses that take visitors up to the Unesco world heritage site recently saw some 1,400 stranded tourists needing to be evacuated.    The conflict revolves around bus company Consettur losing its licence to a rival firm in this remote part of Peru, where, unless you want to hike over Andes mountains, the only access is by public transport.    Back in September, local protestors angry that Consettur was being replaced following what they saw as an insufficiently open bidding process, blocked the railway line to Aguas Calientes with rocks.   Aguas Calientes is the town tourists travel to in order to catch a bus up to Machu Picchu and they had to be evacuated on special train services while the tracks were cleared.   Although Consettur’s licence ran out in September, it is continuing to run it...