Douglas Garven Alexander is a British Labour Party politician who served as Member of Parliament (MP) for Paisley and Renfrewshire South, previously Paisley South, from 1997 until his defeat in 2015. During this time, he served as Chancellor of the Duchy of Lancaster, Scottish Secretary, Transport Secretary and International Development Secretary in the Cabinet under Prime Ministers Tony Blair and Gordon Brown. He subsequently served in Ed Miliband's Shadow Cabinet as Shadow Secretary of State for Work and Pensions and Shadow Foreign Secretary.

Scottish Labour, officially the Scottish Labour Party, is the part of the UK Labour Party active in Scotland. Ideologically social democratic and unionist, it holds 22 of 129 seats in the Scottish Parliament and 2 of 59 Scottish seats in the House of Commons. It is represented by 262 of the 1,227 local councillors across Scotland. The Scottish Labour party has no separate Chief Whip at Westminster.