Analysis has been prepared by Treasury civil servants and their analysis shows that the current arrangements of a full monetary, fiscal, political union bring economic benefits to all parts of the United Kingdom.
Breaking up that union would represent a fundamental change and confront an independent Scottish state with difficult choices about what to put in its place.
More top news
Weather set to improve with plenty of sunshine by Saturday
Tony Davis was the first civilian to reach Pc Palmer after he was stabbed during the Westminster attack.
Defiant Londoners put on a show of solidarity for the victims of the Westminster terror attack at a vigil in their honour.