Independence will create a 'border effect', reducing the flow of trade between Scotland and the rest of the UK, according to a new report by Scottish Labour.
The briefing paper claims trade will be 83% lower after 30 years in the event of independence.
Shadow Scottish Secretary Margaret Curran highlighted the so-called 'border effect' during a trip to a Lockerbie factory this afternoon, Thursday 17 July.
The Yes campaign claim the paper is based on out-of-date data that is irrelevant to Scotland.
More top news
The Lake District has inspired presidents, pop stars and poets to get hitched over the years. Here's five spots where Cupid might strike.
More than one million pounds is being provided to boost the number of golden eagles in the region.
Hannah McNulty investigates how the awful events of December 2015 affected some of the region's most vulnerable people: the homeless.