The Grand Orange Lodge of Scotland, or Loyal Orange Institution of Scotland, Orange Order in Scotland, The Orange Order is the oldest and biggest Protestant fraternity in Scotland. It is an organisation of people bonded together to promote the ideals of the Protestant faith. The Loyal Orange Institution was an official participant in the 2014 independence referendum. Its headquarters are in Motherwell, having previously been in Bridgeton, Glasgow with 50,000 members in the Scottish Lowlands.