When he left the school in 1939 at the age of sixteen, he was unsure of his vocation to ordination, and he spent the first three years of the Second World War maintaining station clocks on the railway line from Swansea to mid-Wales.
When many black African pupils refused to attend schools in protest against the compulsory teaching of Afrikaans, he and the rest of the diocesan clergy encouraged students to complete their education, but also began to speak out against Apartheid.
One of the youth workers, Phakamile Mabija, a member of the Anglican Nomads Educational Group, was arrested for allegedly vandalising public transport in Galeshewe.
Chadwick was then out of the country so it was Thomas Stanage, Dean of Kimberley, who was first informed that Mabija had died after apparently falling from the seventh-floor of the police station.
Once the clergy were released, the Chadwicks were placed under police surveillance, responding by taking regular cups of tea out to the policemen watching their house.
He managed to return to Kimberley in order to conduct the Easter services, and in one final show of defiance, preached in both the local languages of Sesotho and Setswana and (for the benefit of the police), Afrikaans.
The following day, he and his family were escorted to the airport and deported, watched by a large contingent of armed police with dogs, and 50,000 (mainly black) protesters.
[1][2][3][5] On his enforced return to Britain, Chadwick began working as a chaplain at St Asaph's Cathedral and as diocesan adviser on spirituality.
[1][2][3][5] In 1985, with Father Gerard Hughes SJ and Sister Mary Rose Fitzsimmons he co-founded the Llysfasi Spirituality Workshop which developed an international influence.
In 1995, at the age of 72, he moved for the last time, to Salisbury to take up the post of Director of Spirituality at the newly established Sarum College, finally retiring in 1998.