Members of the House of Commons, the Scottish Parliament, the Senedd, the Northern Ireland Assembly or the European Parliament may stand for election at a combined county authority mayoral election where the Combined County Authority Mayor takes on the police [fire] and crime functions. However, if they are elected they must resign their parliamentary/assembly seat before taking up the post of Combined County Authority Mayor.
If you are successfully elected as the Combined County Authority Mayor where the Combined County Authority Mayor takes on the police [fire] and crime functions and you subsequently become a member of the House of Commons, the Scottish Parliament, the Senedd, the Northern Ireland Assembly or any legislature outside the UK, you are automatically disqualified from holding office as a Combined County Authority Mayor and the office of combined county authority mayor would become vacant.
Members of the House of Lords are not disqualified from standing or being a Combined County Authority Mayor.