Nonetheless, he was not happy at Cambridge and transferred in 1967 to University College London. In May of that year he was elected a Fellow of the Royal Society.[1] His membership citation read: Professor Sondheimer is distinguished for his work on the total synthesis of a range of natural products, the partial synthesis of steroid hormones and analogues, and especially for his syntheses of the hitherto unknown class of conjugated unsaturated macrocyclic compounds which has led to some interesting theoretical conclusions. On these topics he has so far published 167 papers.[7] However, funding problems, the difficulty of recruiting foreign postdoctoral students, and his continued focus on now-unfashionable areas of research, all contributed to this not being a satisfactory chapter in his career.