Policy Memorandum to the Social Security (Scotland) Bill as introduced. (2017). Retrieved from https://www.parliament.scot/-/media/files/legislation/bills/previous-bills/social-security-scotland-bill/introduced/policy-memorandum-social-security-scotland-bill.pdf [accessed 8 July 2021]While this did allow quick delivery in 2018, it means that changes now require a bill rather than regulations.