Elliott Crossley voiced the Tenth Doctor in two official Doctor Who: Lockdown! webcast minisodes, Doctors Assemble! [+]Loading...["Doctors Assemble! (webcast)"] and The Genuine Article [+]Loading...["The Genuine Article (webcast)"]. He did not, however, voice him in The Secret of Novice Hame [+]Loading...["The Secret of Novice Hame (webcast)"], for which David Tennant himself reprised his role.
He also voiced the character in unlicensed releases, such as Rick Sanchez VS The Doctor (Rick and Morty VS Doctor Who).