An official Police Scotland list of flags which could be a criminal offence to display includes the Irish tricolour, the Israeli and Palestinian flags and the Catalan and Basque flags – but not the Union Jack or Saltire. . https://www.heraldscotland.com/news/16897189.revealed-the-police-list-of-flags-that-could-be-criminal-offence-to-fly-in-scotland/