Before ordination, Joshua worked in the City until he became a Christian; then he was an aid worker and later a civil servant. He was ordained in 2012 and served as a curate in Streatham and then Chaplain to the Bishop of Southwark. He is now Vicar of Holy Trinity Roehampton. He has a first degree in Philosophy and his training for ordination included a BA and MSt in Theology and Christian Doctrine, specialising in the thought of Karl Barth. He is the author of War and Religion, a Very Short introduction (OUP) and has contributed several conference papers and book chapters.