Gordon Brown, pictured with his father, the late Rev Dr John Brown

On The Westminster Hour in February 2004, we look at the relationship between church and state: the Scottish politicians who are 'sons of the manse' and the powerful impact they have.

'Sons of the manse' is a description almost unknown in the political culture of the rest of Britain. It identifies the sons or daughters of Presbyterian ministers from the Church of Scotland, often imbued with a deep-rooted commitment to public service.

Colin Bell

Its numbers include the Chancellor, Gordon Brown, as well as the up-and-coming Labour minister, Douglas Alexander - plus Liberal Democrats David Steel and Michael Moore.

In a special feature, their role is examined by Colin Bell, the Scottish historian and broadcaster.

Click here to listen to Yes, Minister