[4] In 2020 he chaired the government committee established to review the impact of the COVID-19 pandemic in Wales on Welsh-speaking community groups.
[9][10] Jerry Hunter, Professor in the School of Welsh and Deputy Vice Chancellor at Bangor University, said of Why Wales Never Was, "This is a multi-layered study that tackles core questions about nationality, language and identity.
O Dan Lygaid y Gestapo (University of Wales Press; 2014[12]) explored the influence of Enlightenment thought within 20th century Welsh-language culture.
Pam na fu Cymru (University of Wales Press; 2015) proposed that the historical failure of Welsh nationalism was due to its dependence on a form of British liberalism which promoted Anglophone majoritarianism.
[14] He is also a founding member of the Welsh language pressure group Cymuned, for whom he was a prominent media spokesman between 2001 and 2004, and whose central office he ran.