[1][3] In 1964, he entered St Stephen's House, Oxford, an Anglo-Catholic theological college to train for Holy Orders.
[1][3] In the 1970s and 1980s, Thomas worked at St Stephen's House, Oxford, a Church of England theological college.
[1] In November 1996, Thomas received a letter asking him to become the first Provincial Assistant Bishop (PAB) of the Church in Wales; in that role he would provide episcopal oversight to those priests and parishes that could not accept the ordination of women.
Having accepted, he was consecrated a bishop on 21 December 1996 during a service at St Asaph Cathedral.
[6] A Requiem Mass was held for him on 5 June 2017 at St Mary's Priory Church, Abergavenny.