Tony Chapman was a drummer who occasionally played along with The Rolling Stones in their early days.
In 1962 drummers came and went, including Carlo Little, from Screaming Lord Sutch's Savages, and Mick Avory (later of the Kinks, who was billed as appearing at their debut gig, but did not play).
It was not until as late as January 1963 that drummer Charlie Watts reluctantly surrendered his day job and committed himself to the band.