[3] He ended his business career as Director of Employment and Environmental Affairs at the Confederation of British Industry, before leaving in 1991 to train for ordained ministry.
[6] At the age of 12, under the influence of Billy Graham, John Stott and Maurice Wood, and having attended Emmanuel Church, Wimbledon, he became an Anglican.
[10] On 5 May 2015, Thomas was announced as the next Bishop of Maidstone, a provincial episcopal visitor for conservative evangelical members and parishes of the church.
[12][13] By 19 December 2016, 71 parishes had passed resolutions for conservative evangelical reasons, of which 31 had requested Alternative Episcopal Oversight (AEO) from the Bishop of Maidstone.
[16] Thomas is additionally an honorary assistant bishop in the dioceses of Birmingham, Bristol, Canterbury, Chelmsford, Chester, Ely, Exeter, Lichfield, London, Manchester, Norwich, Oxford, Rochester, Sheffield and Southwark.
Thomas replied to this news: "It is something that will only serve to deepen the crisis that the Church of England faces over the whole issue of human sexuality.
"[27] He stated in December 2016: "I continue to believe that God's Word is clear that sexual intimacy should be experienced only within heterosexual marriage and not otherwise".