 In 1962 Manswell was one of the members of Prime Minister Eric Williams delegation to the Commonwealth Prime Ministers Conference as the nominee of the Labour Congress.The continued development of the CSA saw the organisation purchasing properties in Port of Spain, including the current Head Office in Abercromby Street, Port of Spain, in 1965.On being given a leave of absence from the Union in 1968, he successfully gained a Diploma of Social Studies at Oxford University and went on to complete the first year examination of the LLB Law Degree.