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The Yes campaign claim the paper is based on out-of-date data that is irrelevant to Scotland.
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Emma brings you Monday night's forcast
Fine, dry Bank Holiday Monday. Turning wet from the south overnight into Tuesday. Showery midweek. Improving on Thursday, but for how long?
Emma brings you Monday's forecast for the Border region