He established a high profile as an artist, broadcaster and actor, also known for his success in business activities and as a designer of boats.
He was specially commended on the SASA Members' Exhibition of 1950 as follows: "Undoubtedly the best thing on the show is a smallish canvas 'Eileen Joyce plays Chopin', by Frank Spears.
Here is a genuine attempt to interpret a musical theme in terms of paint; one feels the spirit of action in the moving chords placed in a flowing design" (P.H.W.
Spears's handling of paint was thought by Berman to be analogous to that of Jean Welz (1900–1975): "His concepts are usually quiet and undramatic; still life and flower studies form a large part of his oeuvre.
His palette is restrained, with distinctive use of ochres and warm pinkish tones, frequently accented by a characteristic note of Cerulean blue" (1983:434).