Born in Port of Spain, Trinidad, Singuineau joined the staff of the Shell Company and took an active interest in Amateur Dramatics. After the war, he gave up his secure job with the Shell Company, travelled to London, and gained early acting experience broadcasting for the BBC's West India service, and appearing with the leftwing Unity Theatre. (Singuineau later recalled that, just after the war, the Unity Theatre opened its doors to black actors at a time when West End managements and agents closed theirs.) He also acted with various repertory companies and the Bristol Old Vic.

(http://www.independent.co.uk/news/people/obituary-frank-singuineau-15514...)