 After moving to Scotland, he continued to be involved in major national projects, including the design of the "Concise Scots Dictionary" and the "New Testament in Scots", with which he collaborated with Jardine.Ruari McLean was Typographic Adviser to HMSO 1966–90, and much involved in assessing graphic design courses at art colleges all over Britain.From 1981 he also became a trustee of the National Library of Scotland.