The Doctor Who Production Diary: April 16th

1965 Recording for The Space Museum takes place in BBC Television Centre Studio 4; William Hartnell is absent while on holiday The Space Museum
1966 Debut broadcast of The Celestial Toymaker episode three, The Dancing Floor, on BBC1; soon thereafter, the estate of Frank Richards complains about the character Cyril's resemblance to Richards' creation Billy Bunter The Celestial Toymaker
1973 Recording for The Green Death takes place in BBC Television Centre Studio 3 The Green Death
1974 Elisabeth Sladen is contracted for an additional twenty-six episodes beginning with Robot Sarah Jane
Smith
1974 Ian Marter is contracted to play new companion Harry Sullivan for twenty-six episodes beginning with Robot Harry
Sullivan
1974 Recording for Planet Of The Spiders takes place in BBC Television Centre Studio 8 Planet Of The Spiders
2005 The BBC announces that David Tennant has been cast as the Tenth Doctor The Tenth Doctor
2005 Debut broadcast of Aliens Of London on BBC1 Aliens Of London / World War Three
2008 David Tennant informs Steven Moffat and fellow executive producer Piers Wenger that he will leave Doctor Who following the recording of the 2009-2010 specials The Tenth Doctor
2008 Location filming for The Next Doctor takes place in Newport, Wales The Next Doctor
2009 Location filming for The End Of Time takes place in Taffs Well, Wales The End Of Time
2011 Recording for Let's Kill Hitler takes place at Upper Boat Studios Let's Kill Hitler
2011 Recording for Night Terrors takes place at Upper Boat Studios Night Terrors
2011 Recording for The Wedding Of River Song takes place at Upper Boat Studios The Wedding Of River Song
2012 Location filming for The Angels Take Manhattan takes place in St Nicholas, Wales The Angels Take Manhattan
2013 Recording for The Day Of The Doctor takes place at the Doctor Who Experience in Cardiff, Wales and BBC Roath Lock The Day Of The Doctor