after graduating from christ church, fludd moved to london, settling in fenchurch street, and making repeated attempts to enter the college of physicians. fludd encountered problems with the college examiners, both because of his unconcealed contempt for traditional medical authorities (he had adopted the views of paracelsus), and because of his attitude to authority—especially those of the ancients like galen. after at least six failures, he was admitted in september 1609. he became a prosperous london doctor, serving as censor of the college four times (1618, 1627, 1633, and 1634). he also participated in an inspection of the london apothecaries put on by the college in 1614, and helped to author the "pharmacopoeia londinensis" in 1618—a directory of standardized pharmaceutical preparations given by the london college of physicians. he became such an established figure within the college that he was included in seventeenth-century critiques of the college, including those by nicholas culpepper and peter coles.