The Cellini Trio consists of three well-known instrumentalists: Gordon Walker, who is principal flute of the London Symphony Orchestra and was for ten years principal flute at Covent Garden; Geraint Williams, who is sub-principal cellist of the London Symphony Orchestra; and Roy Douglas, who is a well-known pianist and composer.

A notable feature of the Cellini Trio is the fact that all their programmes are not only very carefully rehearsed, but each number is specially arranged for their combination, as their aim is to perform everything in true chamber-music style.