Scot Peterson works in the area of UK and US constitutional history, particularly in the area of religion, law and politics, focusing on the national religions in the UK (the Church of Scotland, the Church of England and the Church in Wales) and on non-establishment in the United States.
- Marriage law
- Law and religious freedom
- The Church of England
- The Church in Scotland and Wales
- US and UK constitutional history
- State religions
- Church and state