GM’s Day, a 7000-strong 30% PDF sale at DriveThruRPG, and it includes C7 books up to including the brand new Eighth Doctor Sourcebook!
Even if you aren’t picking up the other Doctor books, this one is worth a look by GMs as it’s almost entirely brand new adventures. Pirates and Sea Devils! 60s-style 21st century space explorers! The Brigadier and the Master! An impossible city in the Void! The Mara! Telepathic snails! Battlefield Knights! The Patchwork Man! The Gamestation! A frozen world! Weeping Angels! The Time War!