From 2008 to 2011 he was co-director of the Arts and Humanities Research Council (AHRC)-funded project, "The Gascon Rolls, 1317–1468", jointly with Malcolm Vale of the University of Oxford.
Booth is a fellow of the Royal Historical Society, and has acted as external adviser to University of Toronto Press and the Irish Research Council, and as a peer reviewer to the AHRC.
[9] In particular, he has asserted that the oppressive period of the Black Prince's rule, did not result, as had been generally accepted,[10] the "great rebellion of 1353" (so called by Geoffrey Barraclough, second professor of Medieval History at Liverpool).
[citation needed] Booth's research students have continued his work; for example, Andrew Tonkinson's monograph on Macclesfield in the later fourteenth century and the late Phyllis Hill's edition of the County Court of Chester Indictment roll, 1354 to 1377.
[13][14] In 2015 Booth was in the news when he discovered the apparent first known use of a now commonly used expletive, within the name of one Roger Fuckebythenavele, in the plea rolls of the Chester County Court for the years 1310–1311.