Graphic showing the question being asked: 'should Scotland be an independent country?'
Media playback is unsupported on your device
Video

Scottish referendum: Formal campaign period starts

Friday marks the start of the formal campaign period for Scotland's independence referendum.

On September 18th, Scotland's four million voters will go to the polls to decide whether to remain part of the UK - or leave it and become an independent country.

Lorna Gordon reports.

  • 30 May 2014
  • From the section UK
Go to next video: Row over Scots independence figures