He also edited At War with the 16th (Irish) Division, 1914-18: The Staniforth Letters (2012)[4] and co-edited (with Fearghal McGarry) Remembering 1916: The Easter Rising, the Somme and the Politics of Memory in Ireland (2016).

[5] Previous work includes books on Austen Chamberlain’s term of office as foreign secretary and the inter-war Liberal Party, and articles on Leo Amery and appeasement, the Channel Tunnel project, and Mods and Rockers in the 1960s.

[13] Work as part of this included leading a walking tour of West Belfast around sites connected with First World War veterans.

[15] Later that year he co-authored with Dan Jarvis an article about commemoration of the First World War arguing that Britain needs to ‘emerge from 2014-18 having not only paid tribute to sacrifice, but also remembering survivors and service, and more accurately understanding the true significance of the Great War.’ During the 2015 general election Grayson actively supported Labour candidates in Hemel Hempstead,[16] St Albans[17] and Watford.

[23] With Jonathan Rutherford he co-edited After the Crash: Reinventing the Left in Britain[24] which included chapters from Jon Cruddas, Caroline Lucas and Steve Webb.

He has published an article on public policy in Newark, New Jersey, examining the work of Mayor Cory Booker, a friend from his time studying at Oxford.

[29] He was the party’s parliamentary candidate for Hemel Hempstead constituency in the 2005 and 2010 general elections, gaining 4.4% and 6% increases in the vote to move into second place.