The Doctor Who Production Diary: March 21st

1964 Debut broadcast of Marco Polo episode five, Rider From Shang-Tu, on BBC TV Marco Polo
1968 Filming for The Wheel In Space takes place at the Ealing Television Film Studios The Wheel In Space
1969 Recording for The Space Pirates takes place in BBC Television Centre Studio 6 The Space Pirates
1970 Debut broadcast of The Ambassadors Of Death episode one on BBC1 The Ambassadors Of Death
1975 Tom Baker is contracted for Season Thirteen The Fourth Doctor
1975 Location filming for Terror Of The Zygons takes place in Crabtree, West Sussex Terror Of The Zygons
1979 Filming for The Creature From The Pit takes place at the Ealing Television Film Studios; Lalla Ward joins the regular Doctor Who cast The Creature From The Pit
1980 Location filming for The Leisure Hive takes place in Brighton, East Sussex The Leisure Hive
1981 Debut broadcast of Logopolis episode four on BBC1 Logopolis
1983 Bruno Langley (Adam Mitchell) is born Adam Mitchell
1994 A series bible for Doctor Who, prepared by Philip Segal and writer John Leekley and entitled The Chronicles Of Doctor Who?, is released The Eighth Doctor
2006 Location filming for The Impossible Planet / The Satan Pit takes place in Pontypool, Wales The Impossible Planet / The Satan Pit
2006 Location filming for Love & Monsters takes place in Cardiff, Wales Love & Monsters
2008 Recording for The Stolen Earth / Journey's End takes place at Upper Boat Studios The Stolen Earth / Journey's End
2009 Location filming for The End Of Time takes place in Cardiff, Wales The End Of Time
2012 The BBC announces that Jenna-Louise Coleman will play the new Doctor Who companion, later revealed to be Clara Oswald Clara Oswald
2012 Recording for A Town Called Mercy takes place at Upper Boat Studios A Town Called Mercy