He was elected by the CPB"s Executive Committee in January 1998, in place of Mike Hicks. Later he went to the University of Bath to study economics before taking a position as a parliamentary research officer for Plaid Cymru in 1974. He stayed in the post until 1979.
lieutenant was a difficult year for the party, which had faced defeat in the Welsh devolution referendum and the loss of Gwynfor Evans" seat in the general election.
With a reduced presence in Westminster the party had no need of a large parliamentary staff and Griffiths was made redundant. Griffiths served as the organisation"s secretary and wrote for its magazine "the Arrow" (Welsh: Y Saeth).
He has also previously served as Welsh president of the AUEW-Telegraphic Agency of the USSR union. Griffiths was a speaker at the first Communist University in Wales, and he speaks regularly at national events of the Communist Party of Britain.
He has also taken part in debates at the Oxford Union, Cambridge Union Society and Manchester Debating Union.
In February 2013, Griffiths was among those who gave their support to the People"s Assembly in a letter published by The Guardian newspaper. He continues to be an active supporter of the People"s Assembly nationally and is also active in his local People"s Assembly in Cardiff. European Parliament
In the 1994 election, he stood on behalf of the Communist Party in the single-member South Wales Central constituency, winning 1,073 votes or 0.6% of the total.
Later on, in the 2009 and 2014 elections, he stood as part of the No2EU electoral list in the multi-member Wales constituency.
United Kingdom Parliament elections
All these elections were contested on behalf of the Communist Party. Local elections
In 2008, he stood for the Splott parish council, winning 127 votes, or 3.4% of the total.
In July 1979 he collaborated with Gareth Miles to publish Socialism for the Welsh People, a pamphlet which was critical of Plaid Cymru for its "opportunism" and alleged subservience to the British state. The pamphlet called for the creation of a Welsh Socialist Republican Movement, which was founded by Griffiths, Miles and others in January 1980.