 In 1948, together with Chief Frederick Rotimi Williams and Chief Remilekun Fani-Kayode he set up a Nigerian law firm, called "Thomas, Williams and Kayode".In 1946, he became the legal adviser of Egbe Omo Oduduwa and was one of the founding members of the Action Group.Prior to joining Action Group, he was a successful Lagos lawyer and was a member of the Nigerian Youth Movement.