At the time of his death, Toone was one of the last survivors of the Old Vic theatre company of the 1930s, having appeared alongside the likes of John Gielgud and Laurence Olivier in productions of Shakespeare. He also appeared in a famous production of Lady Windemere's Fan which had been designed by Cecil Beaton. Toone shared a home for several years with fellow actor Frank Middlemas. He died from natural causes at the Danville Hall rest home for actors in Northwood, Middlesex in 2005, aged 94.