The Doctor Who Production Diary: February 29th

1964 Debut broadcast of Marco Polo episode two, The Singing Sands, on BBC TV Marco Polo
1972 Recording for The Mutants takes place in BBC Television Centre Studio 4 The Mutants
1984 Patrick Troughton is contracted for The Two Doctors The Second Doctor
1984 Frazer Hines is contracted for The Two Doctors Jamie
McCrimmon
2008 Recording for The Sontaran Stratagem / The Poison Sky takes place at Upper Boat Studios The Sontaran Stratagem / The Poison Sky
2008 Recording for The Stolen Earth / Journey's End takes place at Upper Boat Studios The Stolen Earth / Journey's End
2012 Recording for Dinosaurs On A Spaceship takes place at Upper Boat Studios Dinosaurs On A Spaceship