The contributors are members of Briefings for Britain (https://www.briefingsforbritain.co.uk), a volunteer group that has been supplying information to the public since 2017. 

Catherine McBride OBE is a professional trade economist, Wilf Glasby is a professional economist working in the private sector, Nick Busvine OBE is a former diplomat, co-editors Robert Tombs and Graham Gudgin CBE are respectively a historian and an economist at Cambridge.