Julian Rees was initiated into Freemasonry in the Kirby Lodge, No. 2818, in London in 1968 at the age of 32, becoming Master in 1976. In 1977 he became Master of the Pilgrim Lodge, No. 238, the only lodge in England working in the German language. He is a member of the Emulation Lodge of Improvement, and has served on their Precepting Committee. He is a founder member of The Cornerstone Society of which he was Secretary. He is Deputy Editor of the international English-language quarterly magazine Freemasonry Today, and has been decorated by the Institut MaConnique de France with the masonic Order de Lafayette.