Devolution in Scotland

The decision of the Parliament of Scotland to ratify the Treaty of Union in 1707 was not unanimous and, from that time, individuals and organisations have advocated the reinstatement of a Scottish Parliament. Some have argued for devolution – a Scottish Parliament within the United Kingdom – while others have advocated complete independence. The people of Scotland first got the opportunity to vote in a referendum on proposals for devolution in 1979 and, although a majority of those voting voted 'Yes', the referendum legislation also required 40% of the electorate to vote 'Yes' for the plans to be enacted and this was not achieved. A second referendum opportunity in 1997, this time on a strong proposal, resulted in an overwhelming 'Yes' victory, leading to the Scotland Act 1998 being passed and the Scottish Parliament being established in 1999.

Scottish voters were given the chance to vote 'Yes' on outright independence in a 2014 referendum. In an effort to persuade Scots to remain in the Union, the major UK parties vowed to devolve further powers to Scotland after the referendum. The 'No' vote prevailed (independence was rejected), but the campaign promise of devolution resulted in the formation of the Smith Commission and the eventual passage of the Scotland Act 2016, making the Scottish Parliament and Government permanent and granting them substantial new powers.

Having agreed to pass the Union with England Act, the Parliament of Scotland 'adjourned' on 25 March 1707. The new united Kingdom of Great Britain came into being on 1 May 1707, with a single parliament of Great Britain which in effect was the Parliament of England with the addition of Scottish representation. The post of Secretary of State for Scotland existed after 1707 until the Jacobite rising of 1745. Thereafter, responsibility for Scotland lay primarily with the office of the Secretary of State for the Northern Department, usually exercised by the Lord Advocate. The Secretaries of State were reorganised in 1782 and the duties now came under the Secretary of State for the Home Department.

...
Wikipedia