How did Gordon Brown campaign against Scottish independence in the 2014 referendum?

Gordon Brown played a prominent role in the campaign against Scottish independence during the 2014 referendum, advocating for the continued union of Scotland and the United Kingdom.12

His efforts included:

• Advocating for Reform: Brown proposed a plan to strengthen the union, which included codifying the purpose of the United Kingdom, recognizing the Scottish Parliament as permanent and indissoluble, and granting Scotland increased income-taxing powers.12
• Public Discourse: He authored the book My Scotland, Our Britain: A Future Worth Sharing (2014) and called for a debate in the House of Commons regarding the future of the union should the referendum be defeated.12
• Final Appeals: On the eve of the vote, Brown delivered an impassioned speech in favor of the union, which was widely regarded as one of the finest of his career.1

Brown’s visible and active participation was considered a significant factor in the eventual defeat of the independence referendum, where 55 percent of voters chose to remain in the United Kingdom.12