Yesterday the UK Supreme Court unanimously ruled that the Scottish government is not allowed to hold a second independence referendum without Westminster's agreement. It means, for now, Scotland will stay in the United Kingdom, though for how long is unclear.

The union between the nations of Great Britain goes back to 1707. On each side of the border, statesmen started to realise that a closer relationship offered solutions to problems both countries were facing: Scotland needed economic security and England needed political safeguards against French attacks. In this episode, Scottish historian Professor Murray Pittock talks Dan through the benefits and cracks in this 300 year old union.

Produced by Hannah Ward and edited by Dougal Patmore