The show featured Graham Norton interviewing about 40 guests on a very long sofa. As David had played the seventh performance of Don Juan In Soho earlier in the evening, he was one of the last batch of guests to arrive.
Graham asked David Tennant about Broadchurch and then about the Breakfast With Seven Doctors auction and lottery for Comic Relief.
The David Tennant Treat 4 Today is a selection of photos of David Tennant's part of the show.
Clicking on any of the photos will show a larger version.
Details about the Doctor Who breakfast
Comic Relief 2017 section of DavidTennantOnTwitter.com
Doctor Who Breakfast section of DavidTennantOnTwitter.com