 In 1943, he joined M. N. Roy’s Radical Democratic Party, and remained a fairly active member until the party ceased to exist in 1948.In 1951, Spratt became secretary of the newly formed Indian Congress for Cultural Freedom, and a frequent contributor to its bulletin, "Freedom First".He settled in Bangalore, and was the Chief Editor of a pro-American and pro-Capitalist weekly named "MysIndia", until 1964.