In 1968, he served as the president of the British Methodist church. Rupp received honorary doctorates from Cambridge, University of Aberdeen, University of Manchester and University of Paris, and was appointed as a Fellow of the British Academy in 1970.
In 1968, he held the position of president of the British Methodist Church. Rupp received honorary doctorates from Cambridge, University of Aberdeen, University of Manchester and University of Paris, and was appointed as a Fellow of the British Academy in 1970.