His primary tutor was Rav Dessler, one of the outstanding Torah scholars of the generation, who later became Rosh Kollel at Gateshead in the early 1940s, and then (in the late 1940s) went on to serve as Mashgiach Ruchani at the Ponevezh Yeshiva in Bnei Brak.
Rabbi Carmell was a successful mortgage broker and real estate developer, living and working in London, England.
In addition to giving regular classes in Torah at his home in the Stamford Hill neighborhood, he founded the Jewish Scholarship Center, the British Shabbos Observance Bureau and the Association of Orthodox Jewish Scientists.
He also co-authored a Hebrew-language book entitled "Michtav Me'Eliyahu" ("A letter from Eliyahu"), which was the first written exposition of the philosophical teachings of Rabbi Dessler.
", he authored "Challenge: Torah views on science and its problems", "Aids to Talmud Study",[2] and "Masterplan: Judaism, its program, meaning and goals", and edited "Encounter: Essays on Torah and modern life", all published by Feldheim Publishers.