Donna Noble
In October 2015, Big Finish Productions announced that Tennant would return to the role of the Tenth Doctor alongside Catherine Tate as his former companion Donna Noble in three new stories from Big Finish. The stories feature current and previous Doctor Who actors, including Strax actor Dan Starkey, former Davros actor Terry Molloy, and many veterans of Big Finish, including Niky Wardley, who portrayed Eighth Doctor companion Tamsin. The three stories were released in May 2016.