Peter Davison is the latest star to be added to the guest-list for the three-day event, which takes place at ExCeL London from Friday, November 22 to Sunday, November 24.
The fifth Doctor actor joins Matt Smith and former Doctors Tom Baker, Colin Baker and Sylvester McCoy in attending the celebration.
It has also been confirmed that 50th anniversary special 'The Day of the Doctor' will be screened, in 2D and free of charge, on the evening of Saturday, November 23.
The screening will have limited availability and tickets will be allocated on a first come first served basis, with Saturday attendees due to be e-mailed shortly with details about how they can reserve a seat.
The full guest list for all three days is as follow:
Friday, November, 22:
Waris Hussein, Anneke Wills, Kate O'Mara, Richard Franklin, Matthew Waterhouse, Sarah Sutton, Terry Molloy, Gabriel Woolf, Barry Newbery, Michael Ferguson, Fiona Walker, Fiona Cumming and Ian Fraser.
Saturday, November 23:
Janet Fielding, Louise Jameson, Yee Jee Tso, Katy Manning, Carole Ann Ford, Geoffrey Beevers, Frazer Hines, William Russell, Nicola Bryant, Deborah Watling, Sophie Aldred, Daphne Ashbrook, David Collings, Terrance Dicks, and June Hudson.
Sunday, November 24:
Peter Purves, Mark Strickson, Bonnie Langford, John Leeson, Lalla Ward, Wendy Padbury, Maureen O'Brien, Michael Kilgarriff, Julian Glover, Stephen Thorne, David Graham, Donald Tosh, Anthony Read, Andrew Morgan and Andrew Cartmel.
For more information on the Doctor Who Celebration, visit celebration.doctorwho.tv.
> Doctor Who: 'Celebration Weekend' event announced for 50th
Watch a teaser trailer for Doctor Who's 50th anniversary special below: